EDIT: Fresh install, still no go, and bluetoothctl just flashes and won’t let me type.
Ya, I did chmod 777 RetroPie and RetroPie-Setup. I was and still am having problems with some zdoom scripts I was trying to make.
Anyhow, on a fresh install of RetroPie, the Bluetooth config section wants me to enter the PIN now for the controller, that or it offers to put in 0000 for me. If I let it do it, it fails, and I’ve no idea what PIN I’m supposed to be putting in.