On their own, my interests aren't that unique. There are plenty of people that enjoy the things I do, but very very few people enjoy all the things that I do. I like to think about my personality as a collection of things rather than one thing or another, helps me realize that I can bring a unique perspective to the world and those around me.
I remember feeling very similar to you, "I am nothing but a chameleon" I told myself, "I am merely mimicking those around me to fit in, sacrificing parts of me that I fear would repel others." But I realize now that as a human being, I am a social creature. It's okay to want to fit in and modifying our behavior to do so. I realized that the parts of me that I was sacrifcing were still there, just muted under certain circumstances, kind of like code switching, and that wasn't necessarily a bad thing.
Frankly, any person's interests are not theirs, and one would be full of themselves to think otherwise. It's the collection of interests, experiences, and circumstances that make us interesting. That's my view, anyway, take from that what you will. cheers~