Preheat the oven to 350°F (175°C) and line a 12-cup muffin tin with liners. Spray the liners with non-stick spray.
In a medium bowl, whisk together the flour, cocoa powder, baking soda, and salt.
In a separate large bowl, mix the coconut oil, honey or maple syrup, egg, vanilla extract, and mashed banana until smooth.
Fold in the shredded zucchini and almond milk to the wet mixture.
Gradually add the dry ingredients to the wet ingredients, stirring until just combined. Avoid overmixing.
Gently fold in the chocolate chips.
Divide the batter evenly into the prepared muffin tin.
Bake for 20-25 minutes, or until a toothpick inserted into the center comes out clean.
Let the muffins cool in the tin for 5 minutes, then transfer to a wire rack to cool completely.