Can you see what's wrong?

It's behind a 100 Grand, one of the worst pieces of candy in the entire machine. I haven't enjoyed a 100 Grand since I was a kid, which is probably the age of the candy since everybody knows it's stale and gross.
I don't understand why the guy who restocked the machine would do this. WHY? There are other empty lanes. Why mix a different product with another? Especially one that doesn't sell well with one that does (I should know, I polished off the last of the Reeses Pieces earlier this year).