High-Protein Fast Food: Best Picks Under 600 Calories at Each Chain

What is the highest-protein fast food under 600 calories?

Popeyes' 5-piece Blackened Tenders lead the field with 47 grams of protein for 280 calories, according to the Popeyes January 2026 nutrition guide. Chipotle's High Protein-High Fiber Bowl, Zaxbys' Chicken Fingerz and Chick-fil-A's Grilled Nuggets round out the top four.

We looked for the order at each chain with the most protein that still stays under 600 calories, using each chain's own nutrition guide or menu data wherever we could reach it. Where we relied on a third-party source, we say so. Prices are typical U.S. figures from October 2026 and vary by store.

A quick way to judge any item is protein per 100 calories. The blackened tenders score nearly 17 grams per 100 calories, Chick-fil-A's grilled nuggets about 19, and a KFC Original Recipe breast 10. A Whopper scores under 5 and a Quarter Pounder with Cheese under 6, which is why chicken dominates this list.

The table below shows our top pick at every chain, sorted by protein. These are menu facts, not diet advice; if you track protein for a medical reason, talk with your doctor.

Which chicken chain gives you the most protein per calorie?

Chick-fil-A wins on protein per calorie with its grilled nuggets, while Popeyes wins on total protein in a single light order. Both beat the fried-only chains because their lean options skip the batter.

Popeyes: the blackened tenders are seasoned instead of battered. Three pieces have 28 grams of protein at 170 calories, and five pieces have 47 grams at 280. The five-piece typically costs $11.09, so it is not cheap, but it costs about the same as the classic five-piece ($10.99) with 370 fewer calories. Compare everything on the Popeyes menu.

Chick-fil-A: the 12-count Grilled Nuggets ($8.39 to $9.55) carry 38 grams of protein at 200 calories. The 4-count Chick-n-Strips are the best fried option, with 39 grams at 410 calories. Add a medium fruit cup at 70 calories and you still stay under 500. See the Chick-fil-A menu.

KFC: an Original Recipe breast has 39 grams at 390 calories. The Extra Crispy breast has fewer grams (35) and more calories (530), so the style matters. KFC's 2-piece drumstick and thigh, $2.99 at nearly every store, gives you 31 grams at 410 calories if you pick Original Recipe. More on the KFC menu, and our KFC vs Popeyes match-up compares every piece.

Zaxbys: five Chicken Fingerz with no sauce have 45 grams at 420 calories, and five traditional wings have 42 grams at 380. Choose a dry rub (40 to 70 calories) instead of Zax Sauce to stay well under 600; prices vary by store on the Zaxbys menu. Our Chick-fil-A vs Zaxbys comparison has the sauce numbers.

What are the best high-protein orders at burger and sandwich chains?

At burger chains, the grilled or breaded chicken usually beats the beef. Burger King's Flame-Grilled Chicken Sandwich (35 g, 410 calories) and Wendy's 3-piece Chicken Tenders (33 g, 420 calories) are the strongest picks.

• Burger King: the Flame-Grilled Chicken Sandwich has 35 grams of protein at 410 calories. A Whopper has 34 grams but 710 calories. See the Burger King menu.
• Wendy's: 3-piece tenders ($5.39 to $5.49) give 33 grams at 420 calories. A large chili adds 25 grams for 370 calories and pairs well with a plain baked potato. See the Wendy's menu.
• McDonald's: the Quarter Pounder with Cheese has 30 grams at 520 calories, and the McDouble has 22 grams at 390 for about $2.50 to $3.19. The 3-piece McCrispy Strips were listed at 30 grams and 400 calories in spring 2026, but McDonald's changed the coating in July, so recheck that figure on the McDonald's menu.
• Sonic: the 5-piece Crispy Tenders have 35 grams at 430 calories. A double Original SONIC Smasher matches the 35 grams but sits exactly at 600 calories. See the Sonic menu.
• Whataburger: the Grilled Chicken Sandwich is listed at 440 calories on the ordering site, and Whataburger's older nutrition PDF shows about 32 grams of protein for the version with Whatasauce. Prices are on the Whataburger menu.
• Arby's: the Double Roast Beef has 38 grams at 510 calories, and the Classic Roast Beef has 23 grams at 360. Sodium is high across Arby's sandwiches, so check the guide if you watch salt. See the Arby's menu.
• Cook Out: the BBQ Sandwich has 29 grams at about 370 calories. A plain Huge Burger has 40 grams at roughly 520 calories, but any topping style pushes it past 600. See the Cook Out menu.

Where can you get high protein at Chipotle, Taco Bell and Panda Express?

Chipotle is the easiest of the three for protein, thanks to its High Protein Menu. Panda Express comes next with Grilled Teriyaki Chicken, and Taco Bell's best picks land in the mid-20s.

Chipotle

The High Protein-High Fiber Bowl has 46 grams of protein and 14 grams of fiber at 540 calories, and the High Protein-Low Calorie Salad has 36 grams at 470. For a snack, the High Protein Cup of adobo chicken costs about $3.80 to $4.15 and has 32 grams at 180 calories. The Double High Protein Bowl reaches 81 grams but is 760 calories. See the Chipotle menu.

Panda Express

A Bowl with Super Greens and Grilled Teriyaki Chicken comes to about 410 calories and roughly 42 grams of protein, based on published nutrition data. The teriyaki chicken alone has 33 grams at 280 calories. Avoid the rice and chow mein sides, which run 520 to 620 calories each. See the Panda Express menu.

Taco Bell

The Chicken Quesadilla has 26 grams at 490 calories, and the 5-piece Crispy Chicken Nuggets also have 26 grams at 320 calories, though the nuggets are not on every store's Taco Bell menu. The Cantina Chicken Bowl is a bigger meal at 26 grams and 580 to 630 calories, depending on the source. Our Taco Bell vs Chipotle value test compares the two chains on cost per meal.

What is the best high-protein fast food breakfast?

Chick-fil-A's Egg White Grill is the best high-protein breakfast under 600 calories, with 27 grams at 300 calories. Arby's Ham, Egg & Cheese Sourdough and Sonic's Bacon Breakfast Burrito are solid runners-up.

• Chick-fil-A Egg White Grill: 27 grams, 300 calories, $4.99 to $5.65.
• Arby's Ham, Egg & Cheese Sourdough: 26 grams, 460 calories, at stores that serve breakfast.
• Sonic Bacon Breakfast Burrito: 25 grams, 470 calories, $3.69 to $3.99, sold all day.
• Dunkin' Turkey Sausage Sandwich on an English muffin: 22 grams, 460 calories. The limited-time Bacon & Cheddar Omelet Bites add 17 grams for 280 calories.
• McDonald's Egg McMuffin: 17 grams, 310 calories.
• Wendy's Breakfast Baconator: 30 grams, but it is 630 calories, so it misses our cutoff.

Breakfast menus end early at most chains. Our fast food breakfast hours guide lists every cutoff time.

How do you keep a high-protein fast food order under 600 calories?

Pick grilled or blackened chicken, order sauce and dressing on the side, and swap fries for a light side. Those three moves keep most orders comfortably under 600 calories.

• Count the sauce. One cup of Zax Sauce is 150 calories and a packet of Chick-fil-A Sauce is 140. Chick-fil-A's Zesty Buffalo (25), Barbeque (45) and Honey Mustard (50) are much lighter.
• Choose the lighter side. KFC green beans (25 calories), a Chick-fil-A medium fruit cup (70) and Panda Express Super Greens (130) cost little in calories. Medium fries run 320 to 420 at most chains.
• Mind the dressing. Zaxbys and Wendy's list salad calories without dressing, and a Chipotle salad's total depends on how much dressing you use.
• Skip the sweet drink. A medium Zaxbys lemonade is 520 calories, more than most of the meals in this guide. Unsweet tea and diet sodas are close to zero.
• Go Original, not Extra Crispy. At KFC, the switch saves 140 calories per breast.

Want the lightest meals overall rather than the most protein? See our lower-calorie picks at every chain.