Preheat the oven to 350 degrees Fahrenheit. Line a baking sheet with parchment paper.
In a mixing bowl, combine the pumpkin seeds, olive oil, chipotle powder, and sea salt. Mix or toss well to evenly coat the pumpkin seeds.
Transfer the pumpkin seeds to the parchment-lined baking sheet, evenly dispersing them across the sheet.
Place the pumpkin seeds in the oven and bake for 17 to 20 minutes. Flip/Stir the pumpkin seeds once every 5 minutes to get an even browning.
Remove the pumpkin seeds from the oven and allow them to cool to room temperature.
Eat immediately or place in an airtight container for future snacking (best to eat within a month!)