Can my dad ban me from seeing 2 friends? I am 19 years old.

I don't know what you mean about "legal", since you don't allege that your dad has locked you up, held a gun to your head, or done anything other than make his wishes known  Certainly it's not a crime for your father to tell you who to see, but, as an adult, you have no obligation to obey him.  On the other hand, as you are an adult, he has no obligation to allow you to stay in his house (assuming he owns the home; if someone else was a co-owner, like your mother, that co=owner would certainly have something to say about it) or pay for your school, any may opt to do neither if you disobey him.  Legally, this is no different form an employer telling an employee that he/she has to work on Saturday.  The employer can't force the employee to work on Saturday, but the employer can fire the employee who refuses.  One caveat, the law may be different in NC than in the states where I practice, or there may be something unusual about your situation (on parole?  not legally competent for some reason?) which you haveen't mentioned that could make a difference.