You're eating a factory-made imitation of a meal, not real food. The chicken is likely processed and injected with preservatives, then sandwiched between layers of refined white bread and processed cheese. This is a far cry from a genuine meal, and your body knows it.
Why trash
Processed bun, breaded chicken fried in seed oil, mayo made from soybean oil. A whole-food ingredient buried under processing.
Try instead
Grass-fed beef patty or pasture-raised chicken breast with lettuce, tomato, and avocado.