Preheat oven to 350°F. Line 8 mini loaf pans with parchment paper.
In a large bowl, mix together sugar, grated zucchini, vegetable oil, eggs, and vanilla. After mixing, stir in flour, cocoa, baking powder, and salt.
Pour batter evenly into mini loaf pans. Bake for 20 minutes, then allow to cool slightly before topping with ganache.
To make the ganache, melt the chocolate chips and coconut oil in a microwave-safe bowl for 30 seconds, then stir. It should become fully melted and have a slightly runny texture. Depending on your microwave, heat for an additional 15 seconds. Drizzle over loaves, then top with cacao nibs.