Preheat the oven to 400ºF. Prepare a 12-cup muffin tin by lining with liners or greasing the cups.
In a large bowl, whisk together the eggs, both sugars, the oil, and the vanilla.
In a separate bowl, whisk together the flour, cocoa powder, pumpkin pie spice, baking soda, baking powder, and salt.
Combine the dry ingredients and the wet ingredients and stir together until about 3/4 of the way combined. Add the zucchini and the chocolate chips and continue to mix until everything is evenly mixed, being careful to not overmix.
Divide the batter between the 12 muffin cups.
Transfer to the oven and bake until a tester inserted in the center of a muffin comes out clean or with a few moist crumbs, about 19-22 minutes.
Let the muffins cool slightly, then remove from the pan to cool completely.
Notes
Nutrition information provided as an estimate only. Various brands and products can change the counts. Any nutritional information should be used as a general guide.