Preheat oven to 375ºF. In a small saucepan, bring 4 cups water, pumpkin seeds and 1 tablespoon salt to a boil. Simmer for 10 minutes, then drain. Pat the seeds dry between layers of paper towels.
Toss the seeds with the sesame oil and remaining 1 teaspoon salt. Spread in a single layer on a greased foil-lined baking sheet. Roast until golden, 10-12 minutes.
Combine seasoning blends for your favorite flavored seeds in a small bowl and toss to coat pumpkin seeds. Roast for 5 minutes more.