Preheat the oven to 350 degrees. Grease a 9 x 5 x 3-inch loaf pan and set aside.
In a medium bowl, whisk together the flour, cocoa powder, salt, and baking soda well. Make sure there are no clumps from the cocoa powder.
In a large bowl or electric mixer fitted with the paddle attachment, beat the coconut oil and sugar about 2-3 minutes. The mixture will resemble wet sand.
Add the eggs one at a time, allowing them to incorporate well after each addition.
Next, add the dry ingredients and beat until just combined.
Now add in the banana, yogurt, applesauce, and vanilla and beat until combined. Fold in the chocolate chips and zucchini and do not over mix.
Pour the mixture into the prepared loaf pan and bake in the preheated oven for 45 minutes to 1 hour. Start to check the bread at 45 minutes. When a toothpick comes out clean, it is ready. My loaf was perfect at 51 minutes, but ovens can vary. Enjoy!