Air fry or bake the chicken according to the instructions on its packaging.
While the chicken cooks, use a microwave-safe dish or small saucepan to heat the marinara.
Add the crispy chicken to the sandwich rolls. Spoon the marinara on top of the chicken before adding the mozzarella and freshly grated parmesan.
Bake or air fry the sandwiches until the cheese melts and begins to brown slightly in spots. (I used an air fryer and cooked the sandwiches for 5-6 minutes at 375ºF.)
Garnish with fresh basil, Calabrian chili peppers or pickled banana peppers, pesto, and freshly grated parmesan.
Notes
I used Seattle International Baking Company sandwich rolls with 200 calories, 7g of protein, 36g of carbs, and 3g of fat each. You may be able to find lower calorie bread options to save a few calories. In my testing, sandwich rolls (not completely sliced through) work better than sliced baguette and other sliced buns and breads. You can use frozen lightly breaded chicken filets instead of bites for more classic chicken sandwiches on standard buns.