In a small pot over medium low heat, melt the unsweetened chocolate and butter. Set aside to cool.
In a medium sized mixing bowl combine the flour, cocoa powder, baking powder and salt. Set aside.
In a mixing bowl beat the eggs and sugar with an electric mixer until well combined. Add in the melted chocolate mixture and stir with a spatula to combine. Gradually add the dry ingredients, mixing just until combined. Mix in the chocolate chips. Cover and refrigerate for 2 hours, the dough will become very thick.
Preheat the oven to 350º F. Using a cookie scoop drop the batter onto a silicone lined baking sheet (or greased if you don’t have a silicone baking mat), bake for 11-13 minutes or until the edges are set. Allow the cookies to cool completely.