01 - Preheat the oven to 430°F and line a large baking sheet with parchment paper.
02 - Cut the potatoes lengthwise into even wedges, yielding 8 wedges per potato.
03 - In a large mixing bowl, toss the potato wedges with olive oil, garlic powder, paprika, rosemary if desired, salt, and ground black pepper until thoroughly coated.
04 - Spread the seasoned wedges in a single layer on the prepared baking sheet, placing each wedge skin-side down if possible.
05 - Bake for 30 to 35 minutes, turning the wedges once halfway through, until edges are golden brown and centers are tender.
06 - Remove the baking sheet from the oven, sprinkle with chopped parsley if desired, and serve the wedges hot.