DNS settings for serving Github Pages over Cloudflare
Update (20/12/20) - Cloudflare proxying prevents SSL Certificate renewal
When the SSL certificate (provisioned by Github automatically for the custom domain you specified, via Let's Encrypt) expired on 18/12/20, I started getting errors from Cloudflare.
Looking deeper, I realized Github was having trouble provisioning the SSL certificate.
The solution was to disable Cloudflare proxying. Upon doing so, I was able to get an SSL certificate provisioned for the root domain, nicholaslyz.com.