Preheat oven to 350 degrees.
1. In a large mixing bowl whisk together all of the dry ingredients. Make sure the cocoa powder doesn't have any big chunks. Set aside.
2. Place the shredded zucchini on a cheese cloth or dish towel and wrap it up. Use your hands to squeeze out some of the extra liquid (about 3 big squeezes is enough). Set aside
3. In another large mixing bowl mash up the ripe banana. Add in the squeezed shredded zucchini and the rest of the wet ingredients and mix together.
4. Combine the wet mixture into the dry and stir to combine but don't overmix the batter. Mix in the chocolate chips. Scoop into a muffin tray lined with cupcake liners. Bake at 350 for 20 -24 minutes. Take out of the oven and let them rest for another 10-15 minutes to firm up before serving.