Optional toppings: Za’atar seasoning, sea salt flakes, coarsely ground pepper and additional extra virgin olive oil
In a small bowl, whisk chickpea flour, water, 1 tablespoon oil and salt until smooth. Let stand 30 minutes.
Meanwhile, preheat broiler. Place a 10-in. cast-iron skillet in oven until hot, about 5 minutes. Add remaining 1 tablespoon oil to the pan; swirl to coat. Pour bater into the hot pan and tilt to coat evenly.
Broil 6 in. from heat until edges are crisp and browned and center just begins to brown, 5-7 minutes. Cut into wedges. If desired, top with optional ingredients.