Preheat the oven to 350 °F. Coat a standard loaf pan with a thin layer of butter or line with parchment paper.
Mix ½ tsp. salt into the grated zucchini and place it into a colander. Press down the grated zucchini by placing a small plate on top, with a can or other heavy object on the plate. Allow the zucchini to press for 10-20 minutes to remove excess water.
While the zucchini is pressing, stir together the olive oil, maple syrup, vanilla extract, eggs, and applesauce until well combined. Gently fold in the flour, baking powder, the other ½ tsp. salt, and cinnamon. Lastly, mix in the chocolate chips and pressed zucchini until they are just incorporated.
Pour the batter into the buttered loaf pan. Bake for 45-50 minutes, or until a knife inserted into the center comes out mostly clean. If your loaf pan is glass, a few minutes extra of baking may be needed.
Serve with salted butter and a sprinkle of brown sugar or a drizzle of maple syrup if you prefer your zucchini bread sweeter.