Add the all-purpose flour, table salt, baking powder, and baking soda to a large bowl and whisk to combine. Set aside until needed.
Add the granulated sugar and lemon zest to another large bowl and rub the ingredients together with your fingers until fragrant.
Add the eggs, vegetable oil, lemon juice, and vanilla extract to the lemon sugar mixture and stir until smooth.
Add the dry ingredients to the lemon mixture and stir until just combined, the batter will be thick.
Add the zucchini and stir to combine.
Pour the batter into the prepared loaf pan.
Place the loaf pan on the center rack of the preheated oven and bake for 60-65 minutes, or until a toothpick inserted in the center comes out clean.
Place the loaf pan on a wire rack and let it cool in the pan for 15 minutes.
Run a knife along the sides of the pan to loosen, then carefully remove the loaf from the pan.
Return the bread to the wire rack to cool completely.