Preheat the oven to 350°F (175°C).

Grate the zucchini and squeeze out excess moisture using a clean kitchen towel.

In a mixing bowl, whisk together the eggs, granulated sugar, vegetable oil, and vanilla extract until smooth.

In another bowl, combine the all-purpose flour, baking soda, baking powder, salt, ground cinnamon, and ground nutmeg.

Gradually add the dry ingredients to the wet ingredients, stirring gently until just combined; do not overmix.

Fold the grated zucchini into the batter until evenly distributed.

If using, fold in the chopped nuts or chocolate chips.

Grease a loaf pan and pour the batter into it.

Bake for 50 minutes, or until a toothpick inserted into the center comes out clean.

Let the bread cool in the pan for 10 minutes before transferring it to a wire rack to cool completely.