Preheat oven to 350°F. Spray a cookie sheet with nonstick cooking spray, set aside.
In a large bowl sift together the flour, baking powder, baking soda, salt, ground cinnamon, and pumpkin pie spice. Set aside.
In the bowl of a stand mixer fitted with the whisk attachment add the egg whites. Beat until foamy. Switch to the paddle attachment. Add the sugar, oil, and pumpkin. Mix to combine.
Add the dry ingredients to the wet ingredients. Mix to combine.
Spread the batter into the prepared baking sheet. Bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean with no crumbs on it. Remove from the oven and allow to cool completely before frosting it.