I've received interview for faculty position at one school but am interested in another school I've just sent out job applications last week and only a few days later received a phone call for a phone interview at one school. I am interested in another school that the chair of that school is on my doctoral dissertation committee.
I've expressed my interest in a faculty position to him after he asked me if I would be interested. Since then, I haven't heard from him and my communication with him has been only about my dissertation. He provided me with a lot of compliments on my work and said directly that he is impressed by the amount and speed of work that I get done. However, I still didn't hear from him a call for interview or further discussion about the faculty position. Now that I am called for interviews, what shall I do?

Should I let him know that I have interviews. if I do he probably going to ask me which schools?.
He is probably trying to be professional and separate you as a student and you as an applicant. I wouldn't bring it up to him. You clearly already have a leg up since he told you about the position in the first place. He also probably already knows that you are applying to other places (since people generally apply for jobs before graduation).