I hope it's just an uneven parking space, otherwise that's pretty significant lean! Ours leans slightly to the left, but only by about 3/8" or so on flat pavement, just barely enough to be noticeable. The gas tank is on the left, so maybe that accounts for it. Our old '93 Ranger also leaned slightly to the driver side.
Looks like it's on a hill and/or the cameras isn't straight
Yah, it's just the camera (or me). I've got a couple shots from the rear that show the truck doesn't have a noticeable lean.It's the camera lens.