Carefully add the cookie mix into the shake n pour container. Pour in the water, seal, and shake-- mixing until the batter's completely incorporated. Add in the chocolate chips, shaking again to evenly disperse.
Preheat a round waffle iron. When ready, spray the iron with the non stick cooking spray. Pour just enough batter onto the iron so that it spreads out in a complete, thin layer. Add more water to the batter if necessary so it spreads.
Cook the waffles, according to the iron's directions, until they're cooked through and golden brown. Carefully remove the cooked waffle and transfer to a cooling rack.
As soon as the waffle's cool enough to handle, place the handle of a wooden spoon in the middle. Carefully fold the waffle in half, over the spoon, creating a taco shell shape. Let it cool completely before removing spoon. Repeat for all waffles.