In a medium bowl, mix gluten-free flour, baking powder, and Greek yogurt.
Using your hands, squeeze the ingredients together. Although the ingredients will seem crumbly, squeezing will help combine them to form the dough.
Once the dough has formed, cover it with a kitchen towel as you grab the rolling pin parchment paper and flour.
Cut parchment paper into 2. You will use one under the dough and one on top of the dough.
Place one of the parchment papers on your working table, and sprinkle some flour on it. Divide your dough into four pieces.
Take one piece of dough, and roll it into a ball using your hands.
Turn the heat on high to the cast iron for about 3-4 minutes, then lower the heat to low.
Place the ball of dough on to the floured parchment paper, then roll it in the flour.
Top the dough with the second parchment paper.
Using a rolling pin, gently roll the dough flat but don’t press too hard. Then, turn the parchment paper, and roll the dough in width.
Mix the zaatar and olive oil to turn into paste.
Place the dough on a heated cast iron, or skillet. Lift and check the bottom of the bread to make sure it is cooked.
Flip the flat bread then spread desired amount of zaatar paste. Cook for about 1-2 minutes or until done.