Hey thanks a lot! :D
Yes, this is an issue, I need to make the paths relative, gonna work on that. At the moment lay theme doesn't handle switching from http:// to https:// well. You'd need to click "x Remove" and re-upload the webfonts. If they have the same fontnames, then everything will be replaced and you won't need to re-choose the right fonts for your textformats and customizer settings.