01 - Preheat oven to 350°F. Grease a 9x5-inch loaf pan and line with parchment paper for easy removal.
02 - Whisk together flour, baking soda, baking powder, salt, and cinnamon in a medium bowl until well blended.
03 - Beat eggs in a large bowl, then add vegetable oil, granulated sugar, brown sugar, and vanilla. Whisk until smooth and fully incorporated.
04 - Add dry ingredients to wet ingredients and mix gently until just combined. Avoid overmixing to prevent tough texture.
05 - Gently fold shredded zucchini and chocolate chips into batter with spatula until evenly distributed throughout.
06 - Pour batter into prepared loaf pan and smooth top surface with spatula for even baking.
07 - Bake for 50-55 minutes until toothpick inserted in center comes out clean or with few moist crumbs (avoid testing chocolate chip areas).
08 - Let bread cool in pan for 10 minutes, then transfer to wire rack to cool completely before slicing.