Not sure what it is but I am getting a click when I brake only and can slightly feel it in the pedal. Only getting it on the passenger side. It almost sounds like something is shifting but hard to tell. everything "seems" to be tight nothing noticable in sight. Anyone have any thoughts?

 

Its called pad shift. The pad shifts and you hear a click.Common on alot of cars. Its not gonna hurt anything, just more annoying than anything.
Usually you wont hear it again until you change direction and hit the brakes.

 

Also, moisture can also build up on the pad/rotor surface, creating a small layer of surface rust, so the pad "snaps" off at first pedal application. Common on many cars, nothing to worry aboy.