Preheat oven to 350.
Mash banana in a large mixing bowl. Add in the rest of the wet ingredients (egg, maple syrup, vanilla, peanut butter) and mix well.
Add in dry ingredients (baking powder, almond flour) to the bowl and mix well. Fold in chocolate chips last. Store batter in the fridge for at least 30 minutes so the dough can set before baking. This makes the cookies spread out less during the process.
Line / grease a cookie sheet and scoop batter (using an ice cream scooper) into circles on the sheet. Bake for 15 minutes and let cool. Enjoy!