Oh, for sure. I'm leaning into the jank and having fun with it looking like a complete hoopty. It's only rolling around our farm, so it can look as ugly as it needs to.
I think this is the easiest way to handle a door. Did the same with my (janky looking) chicken trailer. The overhang i used is heavy duty mud flaps from NAPA.
that complicates weatherproofing the seam between the top of the nest box and the wall of the coop. Depending on the OP's plans, having the back wall hinged on the bottom may be an easier way to go. The "seam" can be tucked under the overhang from the nest box roof and the wall doubles as a...