Yes. Everything works perfectly when it’s Application → nginx → Cloudflare normally (through proxied DNS), but when it’s Application → Cloudflare through tunnel…403 on fonts loading as part of the page. It’s…incredibly strange. I really can’t even imagine what is causing it or why this would happen.
OK. Not sure what the issue was. I restarted Tor (testing with Tor is easiest most of the time) and got a new connection and the issue resolved itself…if anyone else runs into anything like this, restart Tor with a new connection, I guess. Incredibly bizarre.