Preheat oven to 180 degrees C. Whisk together the flour, cocoa powder and bicarb soda.
Cream together the butter, white sugar and brown sugar with an electric mixer in a large bowl until smooth. Beat in one egg until completely incorporated. Beat in the second egg along with the vanilla. Mix in the flour mixture until just incorporated. Fold in the chocolate chips; mixing just enough to evenly combine. Drop by heaped teaspoonfuls onto ungreased baking trays.
Bake in the preheated oven until the edges are golden, 9 to 12 minutes. Allow the cookies to cool on the baking tray for 1 minute before removing to a wire rack to cool completely.