Preheat oven to 350°F. Spray a 9x5-inch loaf pan with nonstick spray. Set aside.
In a large mixing bowl, stir together the flour, cocoa powder, salt, baking soda, brown sugar, and granulated sugar.
1 cup all-purpose flour, ½ cup unsweetened cocoa powder, ½ teaspoon kosher salt, 1 teaspoon baking soda, ¼ cup brown sugar, ½ cup granulated sugar
In a medium-sized mixing bowl, combine the vanilla extract, eggs, melted butter (allow to cool slightly), vegetable oil, and coffee granules.
1 teaspoon pure vanilla extract, 2 large eggs, ¼ cup unsalted butter, ¼ cup vegetable oil, 1 teaspoon instant ground coffee granules
Combine the wet ingredients with the dry ingredients.
Fold in the grated zucchini and ¾ cup of the dark chocolate chips.
2 cups grated zucchini, 1 cup dark chocolate chips
Pour the mixture into the prepared loaf pan.
Top the batter with the remaining ¼ cup of chocolate chips.
Bake for 50-60 minutes or until a toothpick comes out clean when testing.
Allow to cool before serving.