Preheat oven to 360ºF / 180ºC.
Grate zucchini using a box grater and drain off excess liquid. Transfer to a large mixing bowl.
Add to mixing bowl the rest of the wet ingredients and mix until combined.
In a blender or food processor, process rolled oats into a fine powder.
Add the rest of the dry ingredients, except for chocolate chips, to the blender. Process until combined.
Add the combined dry ingredients to the mixing bowl with the wet ingredients. Mix until combined.
Transfer batter to a lightly greased loaf pan.
Bake for 50 minutes or until an inserted stick comes out clean. Transfer to a cooling rack and let cool completely before slicing and storing. Enjoy!