1. Preheat oven to 350 degrees. Boil and drain pasta. 2. Reheat popcorn chicken. 3. In a 9"X13" pan, stir together cooked pasta, popcorn chicken, spaghetti sauce, and shredded mozzarella. 4. Sprinkle top with parmesan cheese. 5. Cover with foil and bake until cheese is bubbly, usually about 30 minutes.