In a large bowl, whisk together the mashed bananas, eggs, honey, oil, and vanilla. In a separate bowl, whisk together the almond flour, cocoa powder, coconut flour, baking soda, and cinnamon. Pour the wet ingredients into the dry and mix to combine thoroughly. Stir in the dark chocolate chips. Spoon the batter into the muffin cups and sprinkle the tops with mini chocolate chips, if desired.