1. Preheat oven to 350.
2. Arrange chicken nuggets in an even layer in a 9x13 baking dish.
3. Sprinkle the Parmesan cheese over the chicken nuggets.
4. Pour spaghetti sauce over the top.
5. Sprinkle the mozzarella cheese evenly over the top.
6. Bake for 35 to 40 minutes or until everything is hot and bubbly.