Killer Blues Solos Made Easy covers the topic, but I would not call it an in depth treatment of the subject.
I was going to suggest the same thing. It's geared to the chord tones in the Dom 7 chords of a blues progression. Griff introduces the minor, then Major "House Patterns" and discusses the best notes to target over each chord.
It's a great study, but specifically for the blues. And you get a nice B.B. style solo to go with it.
Also, anytime Griff discusses "chord soloing" would be of help, maybe the Little Wing Lesson?
But, as OG suggests, I don't think there's anywhere that Griff discusses it in general or at length.
It usually comes up when he's explaining where notes in a lick in one of his solos come from, i.e. you can't go wrong choosing a chord tone. Especially when the chord changes and you want to emphasize a note that characterizes that chord.