01 - Preheat the oven to 325°F (160°C) and line a baking sheet with parchment paper.
02 - If using fresh pumpkin seeds, rinse thoroughly to remove any pulp and pat dry with a kitchen towel.
03 - In a large bowl, toss pumpkin seeds with olive oil, smoked paprika, garlic powder, salt, black pepper, and cayenne pepper if desired until evenly coated.
04 - Spread the seasoned seeds in a single layer on the prepared baking sheet.
05 - Roast in the oven for 20 to 25 minutes, stirring once halfway through, until seeds turn golden and crisp.
06 - Allow seeds to cool completely on the baking sheet before serving or storing.