Preheat the oven to 180°C (356°F).
In a bowl, mix together almond flour, protein powder, baking powder, and salt.
In another bowl, combine Greek yogurt, erythritol, and egg whites.
Combine the two mixtures to make the dough.
Add the dark chocolate chips and mix evenly.
Scoop the dough onto a baking tray.
Bake in the oven at 180°C (356°F) for 12-15 minutes.