Preheat oven to 350°F. Spray a 9"x5" loaf pan with cooking spray and set aside.
In a large bowl, stir in eggs (egg replacer), honey, sugar, oil and vanilla extract until well combined.
Next add salt, flours, cocoa powder, espresso powder (if using), baking soda, baking powder, mixing until well combined.
Next add the shredded zucchini and chocolate chips. Mix until evenly distributed.
Pour the batter into the prepared pan and bake for 65-75 minutes or until a cake tester inserted into the middle of the pan comes out clean.
Cool the bread in the pan for 10-15 minutes before turning it over onto a wire rack to cool completely.