Many people who watch or observe other people tend to pick up really well judge of character skills since you already watching how certain people act. I am usually quite when I'm in class and I tend to observe others as well so I picked up some things while I was people-watching. I sometimes fell as if I'm being to judgmental as well or that I think I'm better than they are but it's because I'm usually right. I don't feel like it's abnormal to feel like you're a good judge of character especially if you have keen observation skills.