Do NOT wash your pumpkin seeds! You only want to remove the big pieces of the pumpkin pulp from your seeds. The little bit of pumpkin pulp on your pumpkin seeds makes it flavorful. If you wash your seeds to remove the pulp, they can get soggy and will end of chewy instead of extra crunchy. If you wish to wash your seeds, dry them well with a paper towel and then air dry them for at least 30 minutes to one hour before roasting. Keep the temperature a little lower and make sure that your pumpkin seeds are laid out in a single layer. You may have to cook in a couple batches if you have a small air fryer. Tossing the spicy seasoned pumpkin seeds during cooking ensures that they will get roasted on all sides.