Pre-heat oven to 350 degrees F. Line a loaf pan with parchment paper or use cooking spray to prevent the bread from sticking.
Grate zucchini into a large bowl. Add eggs, maple syrup, milk, olive oil, and applesauce to the bowl. Whisk together until combined and set aside.
In another medium bowl, combine the flour, baking powder, baking soda, salt and cinnamon. Add this flour mixture to the bowl with the zucchini.
Stir everything together a couple times. Grate in the lemon rind and stir just until no streaks of flour are left.
Using a spatula, scrape the batter out of the bowl and into the prepared pan.
Bake for 60 minutes. Test with a toothpick in the centre of the loaf - if it comes out clean, it's done. If not, bake for additional 3 minutes and check the loaf again.