I am assuming that you changed MATLAB font to Candara through preferences>>Fonts which enables you to change font of Current Folder, Workspace, Variables, Function Browser, Command Window, Command History, Editor
It seems like changing MATLAB font to Candara worked, which is reflecting in the Current Folder window. The one which is unrecognizable seems to be different language which you might have changed. You can refer to Change language of MATLAB UI
Restart your system after applying necessary changes.