Preheat the oven to 180°C (356°F).
Combine whole wheat flour and baking powder in a bowl.
Add cocoa powder and salt, and mix well.
In another bowl, whisk together eggs, milk, olive oil, and honey.
Combine the wet and dry ingredients and mix thoroughly.
Fold in dark chocolate chips evenly.
Spoon the batter into muffin molds.
Bake in the oven for 20-25 minutes.
Place on a cooling rack to cool.