Preheat oven to 375 degrees. Spray 2 12-cup muffin tins and set aside.
Add all ingredients except for the grated zucchini and chocolate chips to a blender and blend on high until smooth and creamy. Fold in zucchini and chocolate chips (you can add directly to the blender pitcher or you can transfer the mixture to a bowl first).
Bake for 15 minutes (they may need another 3-4 minutes if not cooked fully) until fluffy (but when you press down, the bounce back).