Preheat the oven to 180°C.
In a bowl, mix protein powder, oat flour, and almond flour together.
Mash the banana and add it to the mixture, stirring to combine.
Add the egg and almond milk, and mix until it forms a dough.
Stir in the dark chocolate chips evenly.
Shape the dough into round balls and place them on a baking sheet.
Bake at 180°C for 12-15 minutes.