01 - Preheat oven to 430°F and line a large baking sheet with parchment paper.
02 - Slice each russet potato lengthwise into 8 evenly sized wedges.
03 - Transfer potato wedges to a large mixing bowl. Drizzle with olive oil, then add garlic powder, paprika, rosemary if using, salt, and ground black pepper. Toss thoroughly until evenly coated.
04 - Place wedges in a single layer on the prepared baking sheet, arranging skin side down as much as possible.
05 - Bake for 30 to 35 minutes, turning wedges once halfway, until the exterior is golden and the interior is tender.
06 - Remove baking sheet from oven. Sprinkle with chopped fresh parsley if desired and serve immediately while hot.