Sometimes fast food is inevitable. When it happens, these are the smartest choices at every major chain, according to registered dietitians.

Chick-fil-A

Best pick: Grilled Chicken Sandwich (320 cal, 29g protein). Skip the waffle fries — get the fruit cup or side salad instead.

Chipotle

Best pick: Burrito bowl with chicken, brown rice, black beans, fajita veggies, salsa, and lettuce (540 cal, 45g protein). Skip the cheese, sour cream, and chips.

McDonald's

Best pick: McChicken or Egg McMuffin (both under 400 cal). Add a side salad. Apple slices for kids.

Subway

Best pick: 6-inch Turkey Breast on whole wheat with all vegetables (280 cal, 18g protein). Mustard or vinegar instead of mayo.

Taco Bell

Best pick: Chicken Soft Taco (170 cal) × 2 = 340 cal, 24g protein. Power Menu Bowl is also solid.