Look, to put this brutaly, if what you will have to eat in an airline career is of such a high priority, do you really think you are cut out for it? What is going to motivate you to get up all those mornings at 3.30am or go to work at midnight body time?
As a matter of interest, many pilots have quirky dietary habits (myself included), and have survived. Airline food is generally total ordure, and crew food worse. Do you eat to live, or live to eat? Whilst on duty, airline crews do the former.