In a bowl, combine flour, baking powder, baking soda, and salt. Set aside. In a mixer, beat butter and granulated sugar. Add egg, vanilla extract, and brown sugar to mix. Gradually add in the flour mixture while it continues to mix. Stir in the chocolate chips.
Let the cookie dough chill in the fridge for an hour or two. *You can skip this if you want. I prefer to chill my cookie dough for a little bit.*
Preheat the oven to 350°. Coat the skillet with oil spray. Press the cookie dough into the pan. Fill up the pan with all the dough.
Bake in the oven for 22minutes.
Once out of the oven, chill for a few minutes. Add the reserved chocolate chips on top for more chocolate goodness.
