If you want to make this recipe, but you don't feel like making the 2 Ingredient Dough Flatbread, that's fine. You can use store-bought flatbread to make this instead. Any brand of flatbread will work. But, if the flatbread you buy is larger than the ones you would make in this recipe, you may have to add more chicken, goat cheese, and arugula to fill out your flatbreads.