Add the mozzarella, 1/4 cup parmesan, shallot, olives, sun dried tomatoes, pepperoni, basil, salt, pepper, garlic, onion, oregano, dried basil, dried parsley, and chili flakes. Mix until well combined. Transfer the mixture to a large piece of plastic wrap and wrap tightly, shaping into a ball. Chill for at least 30 minutes.