We're not configuring an SSH Slave, or as a slave at all - does that matter? The work around is to not use a launch agent to start the Jenkins process, but rather use the Java Web Start command?
Reading up on the "Java Web Start" command, it appears that that is only used if I'm setting up this Jenkins instance as a remote node (slave), which again I am not.
Additionally, from my reading, the agent.jar file is generated by the Jenkins Master, when I go to set up a slave --> which again, isn't how we're running our Jenkins instance, so I don't think your "work around" is a work around for me.