You have two options: 1) use whole grain flour or a mix between whole wheat and all-purpose. 2) decrease the glycemic load of your meal by eating flatbread with a lot of veggies and legumes, like for instance roasted veggies, a big salad, or some chickpea hummus. Chickpea and other legumes are the perfect companions to this bread as they not only add a lot of complex carbs and dietary fiber but also improve the protein profile of your meal by adding lysine, an essential amino acid that is low in wheat.