How do I change my Host API key in the CloudFlare cPanel plugin?

If you have an already running instance of cPanel with the CloudFlare plugin installed and need to change the Host API key, this can be done simply by re-installing the plugin. Sites already configured will remain configured, but note that if those sites are not associated with your new API key, they will not be able to be managed after you change it. 

For instructions on re-installing the cPanel plugin with your Host Key, see: https://www.cloudflare.com/resources-downloads#cpanel