Slice the chicken in half horizontally and place in sealable bag. Use a meat tenderizer or rolling pin a few time on each piece. Season both sides of the chicken with salt and pepper?
In a bowl, whisk together the cheese, breadcrumbs, and seasonings. Whisk the egg in a separate bowl.
Coat a sheet pan with non stick spray.
Place the chicken in the egg wash, then into the dry mix until entirely covered.
Place in oven for 25 minutes.
Take out of the oven, flip and pour a scoop of marinara sauce and a slice of mozzarella cheese on top and bake an additional four minutes, turning the broiler on for the last minute.
Pairs wonderfully over pasta noodles with a simple house salad and garlic bread!