Preheat your oven to 425 degrees F and line a baking sheet with parchment paper.
Unroll the pizza dough onto a lightly floured surface and cut it into 6 equal squares using a pizza cutter or knife.
Place about 1 tablespoon of marinara sauce on one half of each dough square, leaving a border around the edges.
Sprinkle shredded mozzarella cheese over the sauce and top with 2 pepperoni slices per pocket.
Fold each square diagonally to form a triangle shape and press the edges firmly with a fork to seal completely.
Brush the tops with olive oil and sprinkle with dried oregano and garlic powder.
Bake for 10 to 13 minutes until the pockets are puffed and golden brown with bubbling cheese inside.
Let cool for 2 to 3 minutes before serving with extra marinara sauce or ranch dressing for dipping.