01 - Preheat the oven to 350°F. Grease and flour a 9x5-inch loaf pan or line it with parchment paper.
02 - Whisk together flour, baking powder, baking soda, cinnamon, and salt in a medium bowl until evenly blended.
03 - In a large bowl, beat the eggs, vegetable oil, granulated sugar, brown sugar, and vanilla extract until smooth and thoroughly combined.
04 - Add the dry ingredients to the wet ingredients and stir gently just until incorporated to avoid overmixing.
05 - Fold in the grated zucchini and chocolate chips evenly without overworking the batter.
06 - Pour the batter into the prepared loaf pan and smooth the surface evenly.
07 - Bake for 50 to 55 minutes or until a toothpick inserted in the center comes out clean with a few melted chocolate streaks.
08 - Allow the bread to cool in the pan for 10 minutes before transferring it to a wire rack to cool completely.