Place boneless pork loin chop on a cutting board or butcher block. Using the flat side of a meat pounder, flatten the meat slightly, to about 1/2 inch in thickness.
In a bowl, whisk together the milk and egg.
In a separate bowl, whisk together the flour, bread crumbs, parmesan cheese, salt and black pepper.
Dip a pork chop in the milk and egg mixture, making sure it is coated on all sides. Then dredge the pork chop in the dry mixture. Gently shake off any excess bread crumbs. Place on a baking sheet lined with parchment paper. Do this with the remaining pork chops.
Put the pork chops in a 425F oven.
After the pork chops have been in the oven for about 15 minutes, Spread 1 tablespoon of marinara sauce on each pork chop and sprinkle some grated mozzarella cheese on top. Put back in the oven.
Bake the pork chops for a total cooking time of around 25 minutes or until the pork chops reach an internal temperature of 160F.