Stir flour, cocoa powder, baking powder, and salt in a bowl. Set aside
Melt the chocolate chips in the microwave for 1 minute at 50% power level. Stir and heat for another 30 seconds. Remove from microwave and continue stirring until there are no more lumps. (heat once more for 30 seconds if necessary)
In a medium-sized bowl, beat together butter, granulated sugar, and brown sugar.
Beat in eggs one at a time. Then stir in vanilla extract
Mix in the melted chocolate chips.
Stir in the dry ingredient mixture, being careful not to over stir.
Cover and refrigerate for at least 20 minutes.
Preheat the oven to 350 degrees F.
Line a baking sheet with parchment paper.
Roll the dough into 1 ½ tbsp. balls using a cookie scoop and then place them on a cookie sheet. (leaving 2 inches between each)
Bake for 8-10 minutes.
Cool for 10 minutes on the cookie sheet, centers will be soft.
Transfer the cookies to a wire rack and cool for additional 5-10 minutes.