The food served at IIT Ropar is just edible, nothing extraordinary. You might not like the food at the hostel of IIT Ropar except for several occasions.
Every student in hostels tends to get bored of the mess food after a while. The menu of the mess is prepared to keep in mind the presence of people from different regions of India. You will be served both South Indian as well North Indian cuisines. The mess at IIT Ropar has an advantage, unlike the other IITs, it serves snacks to the students and the breakfast is also pretty great.
Food will not be an actual issue most of the time as you would be indulged in your studies. You will be busy and would not even notice the taste of the food after some time.