Preheat Oven: Set your oven to 400°F.
Prepare Rolls: Place the Hawaiian rolls in a 9 x 13-inch baking dish. Cut two slits in each roll, about halfway through, without cutting all the way through.
Prepare Garlic Butter: In a bowl, mix together the softened butter, minced garlic, garlic powder, Italian seasoning, salt, and pepper.
Stuff Rolls with Cheese: Stuff each slit with shredded mozzarella cheese.
Apply Garlic Butter: Spread the garlic butter mixture evenly over the rolls, making sure to get some inside the slits.
Top with Parmesan Cheese: Sprinkle grated Parmesan cheese over the rolls.
Bake: Bake the rolls in the preheated oven for 10 to 12 minutes, or until the cheese is melted and the rolls are lightly browned.
Garnish and Serve: Sprinkle with chopped parsley and serve warm.