After two years of doing everything from scratch, including my automation software, I'm finally tired of dealing with my UI. So, after watching the appropriately facially accessorized @BeardedTinker with all his neat toys, I decided to be a cool kid, too.
For instructions on setting up Home Assistant on Raspberry Pi, check out the following link:
https://www.home-assistant.io/install...
To start a chromium in kiosk mode, modify the /etc/xdg/lxsession/LXDE-pi/autostart file and add the following:
@chromium-browser --kiosk --app=http://X.X.X.X:8123
Where X.X.X.X is the IP of your Home Assistant install.