Preheat the oven to 350°F (175°C). Line a baking sheet with parchment paper and set aside.
In a large mixing bowl, combine granulated sugar, brown sugar, and melted butter until smooth.
Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract.
In a separate bowl, whisk together the flour, cocoa powder, baking powder, and salt.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
Fold in the chocolate chips using a rubber spatula, making sure they are evenly distributed in the dough.
Using a cookie scoop or tablespoon, drop rounded balls of dough onto the prepared baking sheet, spaced about 2 inches apart.
Bake in the preheated oven for 10-12 minutes, or until the edges are set but the centers are still slightly soft.
Remove from the oven and allow the cookies to cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely.