01 - Combine the sugar and active dry yeast with the warm water in a mixing bowl. Allow the mixture to sit for 5 minutes or until foamy.
02 - Add all-purpose flour, olive oil, and salt to the bowl. Mix until combined, then knead for 5 to 7 minutes by hand or mixer until a smooth, elastic dough forms. Cover and let rise in a warm place for 1 hour until the dough has doubled in size.
03 - Preheat oven to 400°F. Line a baking sheet with parchment paper.
04 - Transfer the risen dough to a lightly floured surface. Roll it into a 10 by 14-inch rectangle using a rolling pin.
05 - Sprinkle shredded mozzarella evenly over the dough. Top with sliced pepperoni, dried oregano, and garlic powder to distribute flavors evenly.
06 - Starting from the long edge, tightly roll the dough into a log. Slice the roll into 12 equal pieces using a sharp knife.
07 - Arrange the dough slices seam-side down on the prepared baking sheet. Brush the tops with melted butter and sprinkle with grated Parmesan cheese.
08 - Bake for 18 to 20 minutes, or until the breadsticks are golden brown and cooked through.
09 - Serve the pepperoni breadsticks warm, accompanied by marinara sauce for dipping if desired.