Guys, my right brake rotor is chipping off on the outer part, the left side rotor is OK without chipping. What could be causing this? BTW I have 2000 honda accord LX, the rotors and brake pads are brand new, just installed a few weeks ago.

Im bringing it back to the shop but I'd like to get an idea on what is causing this, so I dont get fooled by the shop where I got the rotors and brake pads.

Thanks much guys.