01 - Preheat the oven to 400°F. Line a baking sheet with parchment paper and set aside.
02 - Lightly dust a clean work surface with flour. Roll the pizza dough into a 10x14-inch rectangle.
03 - Sprinkle mozzarella and Parmesan cheeses evenly over the dough, leaving a 1/2-inch border. Arrange pepperoni slices in an even layer on top of the cheese.
04 - Starting from one long edge, roll the dough up tightly into a log. Pinch the seam firmly to seal.
05 - Using a sharp knife, slice the log into 8 equal pieces.
06 - Place each piece cut side up on the prepared baking sheet, spacing them evenly apart.
07 - In a small bowl, combine the melted butter, garlic powder, and Italian seasoning. Brush the mixture generously over the tops and sides of each roll.
08 - Bake for 16 to 20 minutes, until the tops are golden brown and the cheese is bubbly.
09 - Remove from the oven and sprinkle with chopped parsley if desired. Serve warm with marinara sauce for dipping.