Preheat oven to 170°F. Line a baking sheet with parchment paper and set aside.
Scoop out the flesh and seeds out from the pumpkin.
Place the seeds in a colander and rinse to separate the seeds from the flesh.
1½ cups pumpkin seeds
Spread the pumpkin seeds out on the prepared baking sheet.
Pop the pumpkin seeds in the oven for 5-10 minutes to dry them out.
Transfer the seeds to a bowl, and toss with the olive oil and seasonings.
1 tablespoon olive oil, ½ teaspoon kosher salt, ¼ teaspoon ground paprika, ¼ teaspoon onion powder, ¼ teaspoon garlic powder, ⅛ teaspoon ground black pepper
Increase the oven temperature to 300°F and spread the seeds out in an even layer on the prepared baking sheet.
Roast in the oven for 25 minutes until the seeds are golden brown and toasty. Check the seeds halfway through and give them a stir.