Place dates in the bowl of a food processor and process until dates form a sticky ball. Add the pumpkin puree, honey, peanut butter, pumpkin pie spice, vanilla extract and sea salt. Process again until smooth, stopping to scrape the sides as needed.
When well combined, transfer mixture to a large bowl and add both ground and rolled oats, ground flax seed and chocolate. Stir until everything is combined.
Cover and chill mixture in the fridge for at least 30 minutes. Roll mixture into bites using about 1 tablespoon of dough and place on parchment or waxed paper. Cover and refrigerate.
Power bites will keep for a week in the fridge or up to 3 months in the freezer if stored in an airtight container or food storage bag.