Preheat oven to 350 degrees. Grease a 13"x9" baking dish with cooking spray.
In a stand mixer or a large bowl, stir flour, sugar, pumpkin pie spice, salt, baking soda and baking powder on low speed until combined.
Stir in oats until combined.
Stir in pumpkin, eggs and vanilla until combined.
Stir in 1 cup of chocolate chips until combined.
Spread batter into the prepared baking dish. Sprinkle with remaining chocolate chips.
Bake for approximately 30 minutes or until golden brown.