01 - Preheat oven to 400°F (200°C) and line a baking sheet with parchment paper.
02 - Lightly dust a work surface with flour and roll out the pizza dough into a rectangle approximately 10 by 14 inches.
03 - Spread an even layer of marinara sauce over the dough, leaving a 1-inch border around the edges.
04 - Distribute shredded mozzarella evenly over the sauce and arrange pepperoni slices in a single layer on top.
05 - Sprinkle grated parmesan, dried oregano, and garlic powder over the filling.
06 - Roll the dough tightly from the long side into a log, tucking ends underneath to seal.
07 - Transfer to prepared baking sheet seam-side down. Brush the surface with olive oil and make 3 to 4 shallow diagonal cuts across the top.
08 - Bake in the center of the oven for 20 to 25 minutes, until golden brown and crisp.
09 - Allow to rest for 5 minutes before slicing. Serve with additional marinara sauce for dipping.