The last couple years I've been making my Oatmeal Bread recipe for Unleavened Bread - just not using yeast and rolling it into 4 approximately 8-inch rounds to bake. It's soft and chewy and yummy. But, I still like the thin, crunchy stuff, so I make this too. I took some last night for Night to Be Observed and again today for the 1st Day of Unleavened Bread, and it was really popular. I find that it's hard to stop eating it.
I'm not sure I roll it quite that thin, but it is pretty thin. Also, I've found that baking this on a pizza pan works really well. That way you don't have to worry about whether or not it fits on your cookie sheet.