Optional for fluffier chocolate pancakes. Stir milk of choice together with apple cider vinegar and set aside for 2 to 5 minutes.
In a bowl combine oat flour, coconut flour, chocolate protein powder, cocoa powder, sweetener of choice, chocolate chips and baking powder.
Add egg, egg whites and pour in the milk mixture (milk + apple cider vinegar, or use just milk). Stir to combine, without over-mixing the protein pancakes batter.
Let chocolate protein pancake batter rest for 5 minutes (optional but recommended).
Pour one scoop of batter into a hot and greased pan. Cook pancakes over medium heat until the underside is golden and bubbles begin to appear on the surface, then flip with a spatula and cook until golden.