Preheat your oven to 325°F. Line a baking sheet with parchment paper. Cream together your melted and cooled butter with sweetener for 3 minutes.
Add in pumpkin puree and vanilla extract and cream together for 10 minutes, until the mixture is light and fluffy. Add in your eggs one by one, mixing until just combined.
Sift in the almond flour, baking soda, salt, pumpkin pie spice and xanthan gum. Fold with a rubber spatula until combined. Gently fold your chocolate chips into the batter.
Using a cookie scoop or spoon, form 18 equal sized balls, rolling to form a smooth, even shape. Use a piece of parchment to press the cookies flat, or leave them in a round ball shape if you prefer them denser.
Put in oven and bake for 17-20 minutes, until they no longer appear wet but are still soft. Keep a close eye on them at the 14 minute mark, because they can burn or overcook quickly. You can sprinkle the cookies with sea salt right out of the oven if desired. Let them cool for at least 15 minutes to allow the cookies to "set up" before consuming.
Store in an airtight container at room temperature for up to 2 days, then transfer to the fridge where they will keep for an additional 3 days. You can also solely store them in the fridge for 7 days.