Chop the chicken breast into small pieces.
Thinly slice the onion, bell pepper, and mushrooms.
Marinate the chicken breast in bulgogi sauce.
Stir-fry the chicken and vegetables in a pan.
Spread the stir-fried mixture over the tortilla.
Sprinkle diet cheese evenly on top.
Bake in an air fryer or oven for 5-7 minutes.
Cut the finished pizza into bite-sized pieces.