RE: Chunky..what a chunk of chocolate!
You're right, Chunky wasn't always made by Nestle. They've been passed around a few times, but I think most of us remember when they were made by the Ward-Johnson company, who also made Goobers & Raisinets. Nestle took them over in 1984. (I remember liking Nestle chocolate when I was a kid, but I don't much now. It seems waxy.)
There were a bunch of different versions of Chunky.
The pecan seems like it would have been the best. There was a version with Brazil nuts too.
Here's a little history I wrote up last year:
There's also a variety available in the South Pacific that's made by a completely different company with Cashews