Pita bread

I have a question regarding Pita bread, yesterday I had dinner at a Persian restaurant and the pita bread they served was very thin and tough. A couple of years ago I had bought some from a Lebanese bakery and it was the same consistency well. Not at all like the soft, thicker bread I normally get in Mediterranean restaurants. I wrote off the bakery experience as just a bad batch of pita but am now wondering if there really is a difference between Middle Eastern bread and that from the countries like Greece. Can anyone shed some light on this subject? Thanks