Preheat your oven to 350°F (175°C) and prepare baking sheets with parchment paper.

In a large mixing bowl, combine the melted unsalted butter, granulated sugar, and packed brown sugar, whisk until smooth and glossy.

Add the large eggs one at a time, whisking well after each addition, then stir in the vanilla extract.

In a separate bowl, whisk together all-purpose flour, cocoa powder, baking powder, and salt.

Gradually add the dry ingredients to the wet mixture, stirring gently until just combined.

Fold in the semi-sweet chocolate chips until evenly distributed throughout the batter.

Drop rounded balls of dough onto the prepared baking sheets leaving about 2 inches of space between each.

Bake for 10-12 minutes until edges are set and tops appear slightly crinkly.

Let the cookies cool on the baking sheets for 5 minutes before transferring to a wire rack to cool completely.