Preheat Oven : Set oven to 300°F (150°C). Line a baking sheet with parchment paper or lightly grease it.

Prepare Seeds : Rinse pumpkin seeds to remove any pulp and pat them dry with a clean towel. Dry seeds thoroughly to ensure even roasting.

Season Seeds : In a bowl, toss pumpkin seeds with olive oil or melted butter until evenly coated. Sprinkle with sea salt and any optional seasonings like garlic powder, smoked paprika, or cinnamon.

Spread on Baking Sheet : Lay seeds in a single layer to ensure they roast evenly.

Roast : Place baking sheet in the oven. Roast for 20–25 minutes, stirring every 10 minutes to prevent burning.

Check for Doneness : Seeds should be golden brown and crunchy. Remove from oven.

Cool : Let seeds cool completely before eating or storing.