Preheat your oven to 350 degrees Fahrenheit (175 degrees Celsius). Grease a 9x5-inch loaf pan.
In a bowl, whisk together the flour, baking soda, baking powder, salt, cinnamon, and nutmeg.
In another large bowl, beat together the sugar and oil until well combined. Add in eggs, vanilla extract, and mix well.
Stir the dry ingredients into the wet mixture, mixing until just combined. Do not overmix.
Fold in the grated zucchini until evenly distributed in the batter.
Pour the batter into the prepared loaf pan and smooth the top.
Bake in the preheated oven for 60 minutes, or until a toothpick inserted into the center comes out clean.
Allow the bread to cool in the pan for about 10 minutes before transferring to a wire rack to cool completely.