Preheat oven to 350F, and grease an 8" cast iron skillet {you could also use an 8x8 baking pan}.
In the bowl of a stand mixer fitted with the paddle attachment, combine the coconut oil and sugars, and beat until creamy.
Add in the baking powder, baking soda, salt, vanilla, and chickpea liquid, and beat until fluffy and well-incorporated.
Stir in the flour, followed by the chocolate chips.
Press dough into your prepared pan, and bake for 27-30 minutes, until the top of the cookie looks dry and the edges are slightly browned. The cookie will solidify more as it cools. Enjoy!