Ah! My domain is my NoIP redirect to my home server while my root_url was still the default:
;root_url = http://grafana.staged-by-discourse.com.
I changed the root_url to reflect my domain, and that fixed it. I left it as it was commented out when I set it up because I assumed the domain would just bring rendered if I changed only the domain since the default.ini is configured like this:
root_url = %(protocol)s://%(domain)s:%(http_port)s/
Did something change?