Front of camper is delaminating....best fix??

While it is a mess, it is likely not delamination, since that part of your Zinger is not a laminated wall panel. What you have is a bad fit of a covering sheet stretched over the framework on the front of your trailer, and likely poor construction technique.

Fixing it is expensive (rebuild of the front) and not likely to hold up long term. Friends of ours went through this with the front of an Aerolite, and again on a Keystone Sprinter.