Preheat the oven to 180°C (356°F).
In a bowl, mix protein powder, almond flour, and baking powder.
In another bowl, mix eggs, olive oil, and honey or erythritol.
Combine the contents of both bowls and mix well until smooth.
Fill the madeleine pan about 80% full with the batter.
Bake in the preheated oven for 12–15 minutes.
Transfer to a cooling rack and let cool completely.