Preheat the oven to 325 degrees F. Spray two 8-inch loaf pans with nonstick spray.
In a medium bowl, whisk together the flour, cinnamon, salt, baking soda, and baking powder.
In a large bowl, use a whisk to combine the sugar, oil, applesauce, eggs and vanilla. Stir in the dry ingredients. Then stir in the zucchini and chocolate chips.
Divide the batter between the two pans, and bake for 40 to 60 minutes. Keep an eye on the loaves and take them out when a toothpick inserted into the center comes out clean. Let cool completely before slicing or storing.
Notes
If you don't want to use applesauce, you can use a whole cup of oil instead.
I like to sprinkle a few additional chocolate chips on top of the batter before baking.
Loaves may be wrapped in plastic wrap and then in foil and frozen for up to two months.