Actually not, but it all depends and it changes from person to person. The food in IIM Kozhikode (in fact in any of the IIMs) is not only based on South Indian cuisine but the college mess includes all kinds of continental cuisines, it keeps changing and the students are the ones who change and decide the menu.
Apart from this IIM-K (all IIMs) have canteens on campus where students can have whatever they want and can choose from a wide range of varieties.
So, there won’t be any problem in adjusting and don’t worry much about the food if you got a call from IIM-K. Cheers!