In a large bowl, combine your pasta, Parmesan cheese, Mozzarella cheese, sharp cheddar cheese, cherry tomatoes, pepperoni slices, sliced olives, green pepper, and pizza seasoning.
In a smaller separate bowl, make your dressing by combining your olive oil, red wine vinegar, oregano, garlic powder, and salt. Mix until well combined.
Pour the dressing mixture over the pasta salad, and let refrigerate for about an hour.