My character Vita is a demon, but he died over 2000 years ago. Back then they had no way to make ice cream. If he were to try mint chip ice cream I think he would be weirded out. With pineapple pizza he would be concerned at what he was looking at, but then come to like it, as foods with meat, cheese, sauces, and bread were popular in his time.
Another Character of mine, Adebayo would hate either option. He's not the type to eat anything other than the meat he can hunt and the fruit/ vegetables he can find. Even when he lived in a city he would eat rather plainly, staying away from strong flavours.
Andrew hates pineapple pizza. He refuses to even try. He also hates tomatoes, and anything with tomatoes on it. Andrew likes mint chip ice cream, but it's not his favourite.