Hi All,
There a knob for that?
    
There's ALWAYS a knob for that! :-)
    
condor_chirp always writes to the job ad.  There is a knob
      STARTD_JOB_ATTRS:
      
https://htcondor.readthedocs.io/en/latest/admin-manual/configuration-macros.html#STARTD_JOB_ATTRS
    
which copies attributes from the job ad to the slot ad.
    
-greg