Pat, don't feel too bad for me. If there were no problems, there would be no need for engineers. I would be unemployed.
The caramelized coating was a happy coincidence. I only figured out the chemistry after it happened.
Fried potatoes with onions and green peppers are always a winner, but this time we only had Vidalia onions. They have less onion flavor, more sweetness, so they are not normally my favorite pick with fried potatoes. This time I was a little heavy on the onions (knowing these onions are not strongly flavored), and they contributed sugars to the dish. Sugars with a few proteins from the bacon, add heat, and the rest is history. Mrs. A thought I did this on purpose.
Regarding the "foodie" place, I must admit the food was very good there, too.