Preheat your oven to 350 degrees F. Grease 2 (8.5x4.5) loaf pans, or 4 mini loaf pans, set aside.
In a large bowl, combine eggs and sugar until completely mixed. Add olive oil, vanilla, and yogurt; mix until completely combined. Add cocoa powder and mix carefully.
In a separate bowl, combine flours, salt, and baking powder. Sift mixture into the wet ingredient mixture; mix until JUST combined - do not overmix.
Add zucchini and mix until just coated with mixture. Sprinkle a little flour over the ¾ cup chocolate chips, then pour into mixture and fold to combine - do not overmix.
Pour batter into pans; top each with the chocolate chips.
Bake for 65 minutes (if using the large loaf pans, 45 minutes for the mini), test with toothpick. When toothpick comes out free of batter (you might see chocolate chips on it though), your bread is done. Allow to cook a few minutes, remove and let cool on a wire rack.