Fast Foods Slim Down

Lower-calorie Satisfries at Burger King, no GMOs at Chipotle Mexican Grill, meals of less than 500 calories at El Pollo Loco, and locally baked buns, fresh fruit teas, and hand-sliced tomatoes at the Sonic chain—options like these make it clear that health and high quality are on the front burner at quick-service restaurants. It’s also apparent that foodservice operators’ strategies are more diverse than ever.

Six in 10 frequent fast food diners cite healthy menu items among the…