Phone stuck in bootloop due to HiFont
Since you have access to ADB with root, you can easily remove the font you installed using this command:

rm /system/fonts/xxxxx.TTF


If you don't have the slightest clue which fonts were yours, you can actually sort ls output by date modified, as so:

ls -tr


...which will show the most recent fonts at top, given the modified dates are correct.

If your most recent font is of the Roboto family, that means your customizer app replaced the default font! You'll have to write down the exact filename, remove it, and cp another font (eg. Arial) and rename it to the same filename. Of course, none of this will be needed if you have a device backup. Just copy the originals.

Hope this solves your problem!