I can't seem to make this work, every time I change the iterm settings to use this font iTerm simply starts loading forever. I have to force quit it, and on load it happens again.

The only way to restore it to normal is deleting the settings:

defaults delete com.googlecode.iterm2

🔧 Your Setup

OSX 10.13.4
iTerm2 3.1.5
brew cask install brew cask install font-sourcecodepro-nerd-font
and
brew cask install font-sourcecodepro-nerd-font-mono

Both does the same.

It works with the Hack one for instance.