Preheat the oven to 180°C (356°F).
In a bowl, mix almond flour, protein powder, cocoa powder, baking powder, and salt.
In another bowl, combine eggs, unsweetened almond milk, erythritol, and vanilla extract.
Combine the dry and wet ingredients to make the dough.
Add dark chocolate chips to the dough and mix.
Divide the dough into a donut mold.
Bake in the preheated oven for 15 minutes.
Let cool, and optionally drizzle melted dark chocolate on top.