Is it normal that i like to rub my clit?

It's the most common form of female masturbation.

(Not to mention how good it feels!)

It is called masturbation, and even babies in their mother's bellies do so.

It may be common, but it isn't normal. Yes, it can feel good, and it's a quick way to orgasm, but it's a bad habit that gets in the way of greater pleasure. Try rubbing your butthole and fingering it instead when you get horny, and learn to make yourself cum with your butt. Anal orgasms are much better than clit orgasms.

and I do it with my pants on, it feels so nice, is it normal I do it with pants on?

If trolling: not very good.

If genuine question: yes. That is masturbation, very normal and healthy. Keep it up. It's good for your heart and circulation. Also teaches you how you do and don't like to be touched.