Preheat the oven to 350F. Line a baking sheet with parchment paper.
In a medium bowl, whisk together the olive oil, spices and salt. Stir in the pumpkin seeds to coat. Transfer to the baking sheet, making sure to scrape out all of the spiced oil clinging to the bowl.
Bake for 10-12 minutes, or until the seeds are very lightly browned and starting to smell nutty and fragrant. Allow to cool completely, then store in an airtight container for up to 1 month.