One meter (200A service) feeding two main electric panels 100A ea, is it legal?
Your problem isn't only &quot;two load centers on one meter&quot;, its &quot;two wires in one lug that's not tested for such use&quot;
While having multiple service panels fed in parallel from a single meter is fine, the devil is in the details, and that's where your current setup fails.  Atop the fact that this is a dual 100A meter base to begin with, which means you're overloading the currently in-service meter socket, the definite issue with inspection is that right now, you have two wires connected to the same lug in a way that the lug was never intended for, which is a violation of NEC 110.14(A).
Considering the issue, I would have the existing base changed out for a single 200A meter socket with suitable tap lugs (a Milbank 200A base with a set of Milbank K5022-INT lugs would do the job) or a 200A meter-loadcenter with 2 100A branch breakers in it.