Lowest calorie fast food

The Chic fil a market salad combines everything I want in a fast food: first of all it is from the one of the best tasting restaurants, Chic fil a. Secondly it is healthy and appears to be delicious.  Just 540 calories,  the salad includes greens, apples, grilled chicken breast, Bleu cheese crumbles, strawberries,  and blueberries.  Yummy!