Aw man, that sucks... but the headache probably wasnt the chiles themselves. Its more about the resin getting in the air when they get too warm, so the fan drying thing was probably the right move. Fiesta timing just makes it a game of roulette every year, ha.

My 4 year old actually tried to eat a raw mushroom from the tray once because it looked like a candy. He bit into it and cried for 20 minutes. Now I chop them myself mostly because the pre-cut ones release this slimy juice after two days that smells like old gym socks. Even the bulk bin onions at Kroger beat the tray price, but you gotta catch the manager markdowns around 7pm on Tuesday nights. That's when they slash the bruised peppers and half the price of the pre-made guac too.

Did you ever find out if they changed the recipe after that or keep the old one? I got wrecked by a "smoked jalapeno" sauce at a BBQ spot once that was basically pure reaper paste. Now I always peek at the menu online before I go and if there's no heat scale I just order the plainest thing and ask for hot sauce on the side. That way I control the burn instead of it controlling me.