Stir together hot macaroni and American cheese in a large bowl until cheese melts. Cool. Stir in eggs.
Brush peanut oil on a 12-inch pizza pan with sides. Spread macaroni mixture evenly in pan.
Bake at 350° for 10 minutes. Spread with sauce; top with mozzarella cheese and pepperoni. Bake 15 more minutes or until cheese melts.
