I am sorry for your trouble, I have never been through that with food but I have a problem with pills.
I feel like a baby when the doc gives me pills that are larger than I can swallow or can be crushed up.
I feel dumb asking the doc to please give me a tiny tiny pill or one that I can crush up.
I think it is the same fear sorta, I mean I always think I will choke or it will go down the wrong way and get stuck.
I am not sure what to tell you but maybe if you turn off the phone ringer and tell yourself,
I am going to take small bites and chew well and everything will be fine. Maybe that could help.
Good luck !
Puttin' the Fun in Dis-fun-ction!