In a large bowl, mix together the dry ingredients - flour, baking powder, salt, and baking soda. Set aside.
Using a stand mixer, cream the butter. brown sugar, and sugar on medium speed for 2-3 minutes until light and fluffy.
Add the pumpkin puree, pumpkin pie spice, and vanilla extract. Mix until combined.
Add the flour mix to the pumpkin puree mix and gently mix.
Halfway through, throw in the 1/2 cup of chocolate chips and fold it in. Mix gently until everything comes together. Do not overmix.
Chill the dough in the refrigerator for a minimum of 30 minutes, preferably an hour.
Preheat oven to 350º F. Line two cookie sheets with parchment paper.
Using a small scoop, scoop out cookie dough onto the cookie sheets. Press the dollops of cookie dough down to flatten and press down 2 - 3 chocolate chips into each flattened cookie dough.
Bake for 8 to 10 minutes. Look for set edges. The cookies might look underdone in the middles, but they aren't!
Remove from the oven and let sit for a few minutes. Cool completely on a wire cooling rack before serving.