Getting back to the original question, it's a tricky one to answer. I have flown bmi several times from LHR to CDG, AMS, BRU and DUB and most of the times all you get in Y is a drink and some pretzels. Unless you are stranded at Schiphol for two hours and then they feel indebted to get out the food, even though the flight to LHR is only 30 mins.
I suppose they'll give you something more substantial to NCE, but don't expect gourmet food, it's still only 1hr30mn flight. Personally, I'd raid the bar and even if it too early to drink it, keep it for your hotel room later.
Bon sejour a Nice!