Non-HTTPS enabled SSRS site does not work on a fresh Configuration Manager 2012 install

After adding the Reporting Services role to my ConfigMgr 2012 lab, I was immediately receiving errors such as “The underlying connection was denied: An unexpected error occurred on a send.” when I was trying to create or view reports in SSRS. After bringing up the Reporting Services Configuration Manager app within SQL 2008 R2, if…