You definitely need to file down those beaks! Chickens typically wear down that tip by wiping their beaks against the ground and other things in their environment. For whatever reason, your birds haven't found the necessary "tools" to do this naturally, so you need to do it for them or they won't be able to eat properly and could starve to death. After filing down their beak you may even notice increased vigor and more of a willingness to leave the coop. Maybe?
Edit: The good news is that it's not a genetic or disease issue, but a management one, and therefore easily dealt with and corrected.