Preheat the oven to 350°F (175°C) and grease a loaf pan.
In a bowl, mash the bananas until smooth. Add the eggs, honey, and vanilla extract, and mix well.
Add the almond flour, baking powder, baking soda, and salt to the wet ingredients and stir until combined.
Pour half of the batter into a separate bowl and mix in the cocoa powder.
Spoon the two batters alternately into the prepared loaf pan, creating a marbled effect.
Top with chocolate chips if desired.
Bake for 40-45 minutes or until a toothpick inserted into the center comes out clean.
Allow the banana bread to cool before slicing and serving.