Hi, here's an update and all I can say is, it's tough to be a crusader.
I didn't go to the ER last night as it didn't seem life threatening. The first thing I looked at was the package to call Hershey, but their customer service hours are only 9-4 ET, so I had to wait until today to call. They gave me a bit of the runaround, said they'd look into it, and I'd hear back in 7-10 days. They are not even going to do an analysis of the candy in my package and said they've had no other similar complaints.
I am really concerned that children are going to eat these and have their mouth burn (I originally purchased the candy for a gingerbread making party I'm hosting this afternoon for a bunch of neighborhood kids; it makes me shudder). My tongue, throat, esophagus still feel odd today, like a reisidual burning sensation. I'm also concerned as a nursing mother that if I ingested some chemical that it could get to the baby, so will probably pump and dump the next 48 hours to be on the safe side.
I left my name and number with the FDA in order to make a report with them too. I also called the store manager of my Target and told him what had happened; he was really on top of things and said he'd remove the product from the shelves right away. I'm glad about that at least.
FWIW, I purchased a similar package last week at an area Wal-Mart, ate most of it (I love pb cups, they are my downfall among all the gingerbread candy!!) and they were fine. Far different than what happened last night. Just make sure you check them out before letting your kids eat them, this is my plea. The ones in my package looked fine, and upon first bite tasted good. It was as I continued to chew that the fiery flavor became pronounced.
Remember, you heard it on the DIS first.

Take care.