Monit lists Apache as Not Monitored

Make sure the contents of the pid file match up with the Apache master process's pid (i.e., the httpd process that runs as root). It's possible the pid file is stale.

If it's stale, get the pid of the Apache master process, and do something like echo 1234 > /var/run/httpd.pid, where 1234 is the pid in question.

After that, run monit monitor apache to restart monitoring of that service.