Preheat oven to 350 degrees F (175 degrees C). Grease and flour a 9x5 inch loaf pan.
In a large bowl, mix together the sugar, oil, eggs, and vanilla. Beat in the cocoa powder, baking soda, baking powder, and salt. Stir in the flour and zucchini until just blended. Fold in the chocolate chips.
Pour the batter into the prepared pan. Bake for 50 to 60 minutes, or until a toothpick inserted into the center comes out clean.
Cool in the pan for 10 minutes, then turn out onto a wire rack to cool completely.
Interesting Facts
Zucchini is a type of squash and is related to the pumpkin and cucumber.
Zucchini is a great source of vitamins A, C, and K.
Chocolate chips contain antioxidants which help protect your body from free radicals.