Mix the garbanzo bean flour with salt, pepper, and garlic powder to taste along with potato or arrowroot starch.
Slowly mix in the water to form a pourable batter without it getting too watered down.
Heat a flat pan on medium heat with some olive or vegetable oil.
Pour ⅕ of the batter for each tortilla on the pan, angling it around to form an even layer, and cook on each side around 1 ½ minutes (each cooked side should no longer be shiny) before plating.