I see that back in June, KCBS had a KOSHER Certified BBQ Judging Class in Overland Park, KS.
Do you need to be a Jew to Judge Kosher Q?
Not in my experience and I believe there is no problem competing as a gentile. In order to insure kosher, the event provides the smoker and all utensils to all the teams. I judged one 3 years ago in Westbury NY. It was a fun and welcoming event and a really big hit with the congregation. Many events have gifts for those that volunteer as judges and most judges particularly like getting tee shirts from the event. Notice Fairway was a sponsor.