In a medium bowl, mash bananas. Mix eggs, yogurt, honey, vanilla extract, and bi carbonate of soda into mixture.
Add flour, dark cocoa powder and mix.
Add chocolate chips and gently fold into mixture.
Pour the batter into a greased 9×5-inch bread pan. Bake for about 45 mins, or until a toothpick comes out clean from the middle of the bread. (Baking times may vary, so keep an eye on the bread.)