My go to for this place is the Kontosouvli wrap, which is around $9 I believe.
It is a little salt forward so make sure you go easy on the salty feta.
I love how they put fries into the pita; it's just so authentic. I hate a dry pita so I always ask for extra tzatziki.
It is so big, I can split it in half (this can get messy) and save it for another meal. Don't forget to ask for extra napkins :)