Preheat oven to 300°F and line a baking sheet with parchment to prep for pumpkin seeds.
Cut the pumpkin open to remove the pulp and seeds.
Prep a large bowl of warm water to clean and separate pumpkin seeds from the pulp.
Submerge pieces of pulp to sift floating seeds from the surface of the water.
Let the remaining seeds soak for 5 minutes to be lifted to the surface of the water and the pulp will sink to the bottom of the water.
Use a slotted spoon to sift out the remaining pumpkin seeds then toss and towel-dry pumpkin seeds with olive oil.
Evenly distribute the pumpkin seeds on the baking sheet and add seasoning to the mixture.
(If you're opting to make several flavors, it's recommended to toss the pumpkin seeds in a plastic bag or bowl with the desired seasoning to ensure even seasoning coating. Then distribute on the baking sheet evenly.)
Roast in the oven for 20-30 minutes while stirring seeds every 10 minutes until the pumpkin seeds are golden brown.
Remove from the oven once pumpkin seeds are golden brown and let cool completely that will help to add crisp to the pumpkin seeds.
Serve and enjoy!
Store in an airtight container (mason or canning jar) in the pantry for up to 3 months.