In a medium bowl, whisk together flour, baking powder, baking soda, and salt until well combined.

In a large mixing bowl, cream together butter, brown sugar, and granulated sugar until light and fluffy, about 5 minutes.

Add egg and vanilla extract, beating until fully combined and smooth.

Gradually add dry ingredients to the wet mixture, blending until no flour pockets remain. Fold in chocolate chips.

Divide the dough into six portions, shaping each into a ball.

Place the balls on a lined cookie sheet, cover with plastic wrap, and refrigerate for at least 2 hours.

Preheat the oven to 400°F (200°C). Bake cookie balls for 15-18 minutes, until edges are golden.

Cool the cookies on the tray for 5 minutes, then transfer to a cooling rack.