Preheat oven to 350°F. Grease loaf pan and line bottom with parchment paper. Dust sides with coconut flour. For easy release, line entire pan with parchment paper.
If your zucchini is moist, wring out the excess moisture by placing the zucchini in a towel and squeezing.
Using a food processor or mixer, blend together the zucchini, eggs, butter, maple syrup and vanilla. A food processor will further break up the zucchini so you won’t see it in the baked bread. Transfer mixture to bowl and add coconut flour, cocoa powder, baking soda and salt to the zucchini mixture. Stir until well blended. Let the batter sit for a few minutes.
Mix in the chocolate chips, then pour the batter into the prepared pan and bake for 45-50 minutes, or until a toothpick inserted in the center comes out clean. Cool and serve.