Preheat oven to 350F. Line an 8x8-inch pan with aluminum foil for easier cleanup and spray with cooking spray; set aside.
To a large bowl, add the eggs, sugar, pumpkin, oil, pumpkin pie spice, cinnamon, vanilla, and whisk to combine.
Add the flour, baking powder, baking soda, salt, and stir until just combined, don’t overmix.
Add the chocolate chips and stir to combine.
Turn batter out into prepared pan, smoothing the top lightly with a spatula. Bake for about 35 to 40 minutes (I baked 36 minutes) or until center is set and a toothpick inserted in the center comes out clean or with a few moist crumbs, no batter.
Allow cake to cool in the pan for at least 1 hour before slicing and serving.