Flatten chicken breasts with meat pounder.
Season with salt. Set aside.
Mix ricotta, spinach, pecorino romana, nutmeg, and mozzarella with only half of the egg. Sprinkle with salt and pepper. Use salt sparingly as pecorino is salty.
Put the ricotta mixture onto the chicken and fold over. Gently brush egg wash and cover with Pork Panko.
You can put chicken in oven or at this point fry on one side for five minutes and turn over and place in oven. I like starting on top of the stove.
Place parchment paper or silpat on baking sheet.
Place on baking sheet. Brush the remaining egg on top. Sprinkle pork panko over chicken.
Bake for twenty minutes and then test inside for doneness. Internal temperature has to be 165 F. or 74 C.