Preheat the oven to 180°C (356°F).
In a bowl, mix together protein powder, cocoa powder, oatmeal, and baking powder.
In a separate bowl, whisk together eggs, plain yogurt, and honey until well combined.
Combine the two mixtures and mix well, then fold in the chocolate chips.
Shape the dough into cookies and place them on a baking tray.
Bake in the oven at 180°C (356°F) for 12–15 minutes.