Chicken doesn't seem to recognize command-line-arguments. I've tried compiling the .scm and running (display (command-line-arguments)) and it throws unbound variable every time. I've reinstalled from the Void Linux repository.
You will have found the documentation for command-line-arguments on the documentation for the module (chicken process-context). These modules aren't loaded by default in CHICKEN 5, as opposed to CHICKEN 4 (where it was quite ill-defined what was loaded there by default).
In CHICKEN 5, as is documented in the manual page explaining about Modules, by default only scheme, (chicken base) and (chicken syntax) are available to a program. Anything else you will need to explicitly import.
So, long story short, your program needs a (import (chicken process-context)) at the start, that should fix it!