The issue you are encountering is likely related to how Tkinter handles Unicode encoding and font support on Raspberry Pi, especially with non-ASCII characters. I suggest focusing on the following:

Ensure that your system is set to UTF-8 (export LANG=en_US.UTF-8). Verify that the fonts are properly recognized by Tkinter. If you're still having trouble, consider upgrading Tcl/Tk or trying specific fonts that are known to work well with Tkinter. Let me know how it goes, and feel free to follow up if you encounter further issues! I'll be happy to help debug more. 😊