ANSWER: solved. think about this. it's deeply intuitive if you know about this stuff. its very simple. IN THE TIME WE STOPPED EATING (OVERNIGHT OR BY USING AMPHETAMINE) OUR BODIES HAVE GONE INTO A LIGHT STATE OF FASTING. Therefore when we eat, our body is just trying to warn us -HEY DONT MESS UP THIS FAST, WE'RE JUST STARTING TO HEAL! as we're trying to eat out of habit when we weren't actually hungry in the truest sense. that's it.
the condition is totally benign. its just us improperly breaking an unintentional fast.
Also this is why it doesn't matter what we eat! if its food, you broke the fast. its not an allergy. its just any food will burn. and thats also why the burning stops when you barrel through the first few bites. or you can go back to the same offending food a while later. BECAUSE BY EATING, YOU BROKE THE FAST AND YOUR BODY REALIZES YOU ARE IN DIGESTION/EATING MODE AGAIN. thank you.
also many people without bands experience this. i assume when you get a band you've become more sensitive to the way your body reacts to going without food. or you now go into the fasting state much faster like many people who do not have bands.