On a lightly floured surface, roll out the pizza dough into a square, about 1/2 inch thick.

Spread a layer of marinara sauce over the surface, leaving a clean border at the bottom.

Sprinkle with black pepper, oregano, and garlic powder.

Add most of the mozzarella cheese (reserve about 1/3 cup), then the chopped pepperoni and parmesan cheese.

Starting from the top, roll the dough tightly downward toward the bottom edge, keeping the filling inside.

Slice the roll into 1- to 1 1/2-inch thick rounds.

Arrange the slices flat on a parchment-lined baking sheet, spaced 2 inches apart.

Sprinkle the tops with the remaining mozzarella.

Bake at 425°F for 10–15 minutes, until golden and bubbly.

Serve hot with extra marinara for dipping.