Preheat your oven to 400 degrees. Line the sheet pan with tin foil for easy cleanup. Lightly grease the foil on the sheet pan with olive oil. Spread boiled seeds onto the sheet pan. Drizzle a little more olive oil on the seeds, and toss the seeds to lightly coat all of them. Make sure you have a single layer of seeds on the sheet pan before baking. Sprinkle seeds with sea salt right before baking.
Adjust this recipe according to how many pumpkin seeds you would like to toast (each pumpkin will have a different amount of seeds) This recipe is for 1 cup seeds. Adjust measurements of your ingredients based on how many seeds you have.