Preheat the oven to 180°C.
Sift flour, baking powder, and cocoa powder together.
In a bowl, mix eggs and sugar.
Add melted butter and milk, and mix well.
Add the sifted dry ingredients and combine.
Stir in the chocolate chips evenly.
Divide the batter into muffin tins.
Bake in the oven for 20–25 minutes until done.