Asparky, did you ever find a lock solution for your outside kitchen? What is the actual thickness of the door? One of my cargo doors also had a 2 1/8" lock on it, but it was longer than I needed. The thickness of my door was less than 1 1/2" so I was able to use a 1 1/2" lock and a cam with a 3/16" offset.
I replaced all my locks with the barrel type from Industrial Lock and Hardware. They are good people to work with and I highly recommend. All my locks work smoothly and the key code is unique to my unit.
Rod & Carla B.
The Hounds Kooper & Abby
2015 Sunseeker 3010; '14 Ford Focus toad