Unroll pizza crust on a cutting board, and sprinkle with cheeses and pepperoni. Roll up, starting with long side; moisten edge with water, and pinch seam to seal. Cut into 2-inch slices, and place 1 inch apart in a lightly greased 15- x 10-inch jellyroll pan; flatten pinwheels slightly.
Bake at 400° for 15 to 20 minutes; serve with warm spaghetti sauce.
Note: Baked pinwheels may be frozen in an airtight container up to 1 week.