Cevapi, a few pasta and seafood dishes, and other more internationally common stuff like pizza and steak. All in all most of the meals were terrible tbh, a few were decent and one restaurant had really good food across the board, one I ended up returning to for the last days of my week long visit. But like I said, it was really touristy and that usually affects the cuisine in a negative manner. I'm not willing to write off Croatian cuisine just becauae I wasn't satisfied with what Rovinj had to offer.
Also I had just come from Italy and that's hard to match for anyone in terms of food :D