Preheat the oven to 375°F.
Mix the bread crumbs and parmesan cheese together.
Put the milk in a large enough bowl to dip the chicken. Start by putting the breasts in the milk and then dip them in the bread crumb mixture. Repeat 3 times to coat the chicken well.
Place in a dish and bake for 20 minutes or until the chicken is cooked.
Then, brush the chicken breasts with tomato sauce, sprinkle with oregano, and top with cheese.
Put back in the oven and cook for about 10 minutes or until the cheese is golden brown.