01 - Preheat oven to 425°F. Line a large baking sheet with parchment paper.
02 - Halve each potato lengthwise, then slice each half into 4 to 6 wedges depending on size.
03 - Place wedges in a large bowl. Add olive oil, sea salt, smoked paprika, garlic powder, black pepper, onion powder, and cayenne pepper if using. Toss to coat evenly.
04 - Spread wedges in a single layer on the prepared baking sheet with skin side down.
05 - Bake for 30 to 35 minutes, flipping wedges halfway through, until exterior is golden and crisp.
06 - Remove wedges from oven, sprinkle with chopped parsley and grated Parmesan cheese if desired, and serve while hot.