Preheat oven to 350ºF and spray a bread pan (8 x 4) with non-stick spray. Then, line it with parchment paper. Set aside.
In medium bowl add all the dry ingredients (almond flour, tapioca flour, baking soda and salt) and mix well to combine.
In large bowl whisk together mashed banana and sweetener. Then, add egg, oil and vanilla extract. Whisk everything together until evenly combined.
Mix the wet and dry together until combined.
Add the chocolate chips and fold them into the batter.
Pour the batter into the bread pan. Add extra chocolate chips on the top of the batter if you desire.
Bake for about 30 minutes uncover, then cover it with foil and bake for more 20 minutes or until a toothpick comes out clean. It probably will be done between 50-70 minutes. Baking times may vary because ovens vary in power and efficiency.
Place the bread pan on a wire rack and let it cool down for 10-15 minutes before lifting from the parchment paper to remove bread.
Slice into 10 slices!