Preheat oven to 350 degrees
Line a brownie baking dish with parchment paper and spray with pam spray, set aside
Using a large mixing bowl, combine the flour, pumpkin pie spice, baking soda, and salt and whisk to combine. Set aside
Using a standing mixer, cream together the butter and sugar until light and fluffy
Mix in the egg and vanilla and beat until combined
Mix in the pumpkin puree and beat until combined
Gradually mix in the dry ingredients until combined
Fold in ¾ C of the semi sweet chocolate chips and the chocolate chunks
Spread batter into your brownie baking dish
Sprinkle remaining chocolate chips and chunks onto the batter
Bake in the oven for 30-45 minutes or until a toothpick comes out clean
Allow to cool completely before cutting it and enjoying!