You can modify the default installer display font when you start the InstallShield. For example:
./setup -is:javaconsole -font "FZFangSong"
The example uses the Chinese font FZFangSong and requires that the LANG environment variable is set to a Chinese locale such as zh_CN.
To ensure that characters are displayed correctly, the JAVA_FONTS environment variable must point to the location of the font files. Otherwise, InstallShield terminates with this message:
Invalid command line option: unable to find fontname font. Make sure the font name is correct and JAVA_FONTS environment variable is set.