Preheat oven to 400 degrees. Dip chicken into egg and then into bread crumbs, coating thoroughly.
In a medium skillet, heat oil. Cook chicken in oil until done and well browned on both sides. Pour spaghetti sauce into a 7x11 inch baking dish. Place chicken on sauce and top with Parmesan and Mozzarella cheese. Bake for 15 minutes or until cheese is melted and lightly browned. Makes 4 servings.