Preheat the oven to 350 degrees Fahrenheit.
Line a muffin tray with 12 liners and set aside. Grate the zucchini and set aside. Don't squeeze out the liquid.
Whisk together all wet ingredients aside from the zucchini.
Whisk in the dry ingredients, aside from the chocolate chips, making sure to spoon and level the flour and cocoa.
Fold in the zucchini and chocolate chips.
Scoop the batter into the muffin tray, filling each pretty close to the top for nice round muffin tops. Add some extra chocolate chips on top.
Bake for 20-25 minutes or until a toothpick comes out clean, but careful not to over bake! 22 minutes is usually perfect in my oven, but all ovens are different.
Let cool in the tray for about 10 minutes, then remove and let finish cooling on a cooling rack.