Preheat oven to 350 degrees. Mix together the rigatoni, 3/4 of the spaghetti sauce can, mozzarella, salt, and pepper to taste. Place in the bottom of a deep dish baking pan. Place the chicken breast on top of the pasta, cover with the remaining spaghetti sauce and Parmesan.
Bake for 30 minutes, until the chicken is cooked through. Serve!