I pick Indian Veg, Low Cal, Low Fat or if its breakfast - Kosher.
On a recent (and my only) ps flights - from JFK they had my meal loaded, on the return from SFO though, they didn't have a special meal for me and did not have the request listed at all.
I took a regular entree they had and then regretted it, but YMMV on that -- next time, I'd just eat the appetizer, roll and a bit of dessert (for consolation

) totally skipping the entree if they didn't have my request. That food was much too rich for me.