Yes I think any bread cooked on the stove top takes a little while to figure out the correct heat level. I wondered about the salt content. It seemed well within what I normally would tolerate so perhaps the fault lies in the za'atar. Anyway I will try it again. I hope within the next few days.
Edited to add
I checked the contents of my Za'atar package and it does indeed contain salt! No indication of how much,