Preheat oven to 350 degrees.
Line 18-20 muffin tin wells with cupcake papers.
Combine eggs, oil, sugars & vanilla in a mixer bowl - mix well.
Add zucchini - stir.
Add flour, cocoa, baking soda, baking powder & salt - mix on low & then beat on high about 20 seconds once all incorporated.
Stir in chocolate chips.
Spoon out batter into lined muffin tins about 3/4 full.
Bake 25-30 minutes or until toothpick test is clean.
Cool on wire rack.
Store at room temperature in an airtight container.