Wash and pat the chicken breasts dry and then coat them with the breadcrumbs.
After the chicken breasts are breaded, fry them either in a skillet with a little olive oil. Fry the breasts until they are completely cooked.
Pour ½ of the spaghetti sauce into a 9x5 baking dish.
Place the cooked chicken breasts on top of the sauce.
Pour the remaining spaghetti sauce on top of the chicken breasts.
Sprinkle both cheeses on top. Put the dish into a 400 degree oven for 30 minutes, or long enough to warm all the sauce and breasts thoroughly and melt the cheese.