Hey @ken, thanks for your patience on this! I believe your repo configuration is already set up to work for this (you have marios-pizza content in its own directory). Do you want to try something like this:
[[redirects]]
from = "https://marios-pizza.helplocal.us/"
to = "/marios-pizza"
status = 200
force = true
or with asterisk and splat:
[[redirects]]
from = "https://marios-pizza.helplocal.us/*"
to = "/marios-pizza/:splat"
status = 200
force = true
I’m linking a few posts related to this that may be helpful for you:
https://answers.netlify.com/t/forwarding-subdomain-to-a-path/2988/2
And:
Let us know how it goes for you and if you continue to run into issues!