Good find - I hadn't seen this interview before. I found it very interesting that right up front Chet got hit with a question I have to answer all the time about my guitar club - and, he struggled with the answer very similar to my diatribe answers: "How do you describe your music." Anybody asking that question is looking for a monosyllabic "grunt", (rock - jazz - country - classical - standards) and there just isn't one. It's all of them - and, I have never found a word, or short phase, that can cover that spread.
BTW, this was obviously taken in the 80's and a low budget production. The FIRST thing they would do today is get Chet out of that clashing pattern jacket - or, find another chair.