I would take some snaky food!! Yum!
They normally have food on the plane but if you dont wanna eat that then Id suggest a little picnic. This is what I would take
A few packs of soft crisps, like ones you would give to a small child. ( Wotsits or Quavers over here)
Some Chocolate like Milky way.. Or malteasers, something like that will be easy to melt and mily way is sooo soft!
Some soft bread sarnies. I like to use fluffy bread and cut the crusts off, and have something like cheese and tomato in them or a sandwich spread as these are easy to break bits off with your fingers without making a mess, I never bite into sarnies anyways, but most people do so I suggest that. Or take a nife and fork!
I always like cold pizza, you could cut it up into bite size peices before you go, and keep it in a nice container, therefore you have pizza bites!!
I cant think of much as I dont know what brands you have there, but genrally think, what would you give a baby? Not like newborn ( dont wanna live on milk!) Like just teething todler food.
Anything spongey and genrally anything that is going to be, chew it a little and swallow.
Why dont you try and have a meal in the airport before you leave? Most places have reasurants and you could get something soft there! If not stuff your face beforee? When your on the plane, try to drink alot, and take food you can contantly snack on, I know there must be some snacks you can eat at the moment, just take them!!
I hope I have helped and have a nice and safe flight!
Sam