Prep the Zucchini: Grate the zucchini and squeeze out excess moisture using a clean kitchen towel or paper towels. Set aside.
Mix Dry Ingredients: In a medium-sized bowl, whisk together the flour, baking soda, salt, and cinnamon.
Mix Wet Ingredients: In a large bowl, whisk together the eggs and sugar until smooth. Add the vegetable oil, vanilla extract, and grated zucchini. Stir until combined.
Combine Wet and Dry Ingredients: Gradually add the dry ingredients to the wet mixture, folding gently until just combined.
Bake: Preheat your oven to 350°F (175°C). Grease a 9x5-inch loaf pan and pour the batter into the pan. Bake for 50-60 minutes, or until a toothpick comes out clean from the center.
Cool: Allow the bread to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.
Prepare the Lemon Glaze: While the bread cools, whisk together powdered sugar, lemon juice, lemon zest, and a pinch of salt until smooth.
Glaze the Bread: Once the bread is cool, drizzle the glaze over the top, allowing it to drip down the sides. Let the glaze set before slicing.