Preheat oven to 375ºF and line two large rimmed baking sheets with parchment paper.
Cream the butter and sugar in a large mixing bowl with a hand mixer until light and fluffy (or stand mixer with paddle attachment).
Add the egg and vanilla bean paste, mixing until fully incorporated.
In a separate bowl, whisk together the all purpose flour, baking powder, baking soda, ground cinnamon, ground nutmeg, and kosher salt.
Alternate adding the dry ingredients and the pumpkin puree to the butter mixture. Fold in chocolate chips with a rubber spatula.
Scoop 2 tablespoons of dough onto prepared baking sheets (or use a large hinged scoop), leaving 2 inches of space between cookies.
Bake 14-16 minutes, or until the edges are set, golden brown, and the centers spring back when touched.
Let cookies cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.