Jack's noxious personality and deteriorating body does make him "unique", that's for sure. His crimes against food are another issue--has he really been raised in a world where culinary abortions are the norm, or did he just fuck up recipes?
He's just a fuckup. He lived in southern California until he moved to TN in 2015 or whenever it was, so he's had plenty of access to cuisines from around the globe via restaurants within an hour drive from him. Competent restaurants as well. The scalfani family historical food crimes either amount to modern day people being horrified by what is basically a shitty aspic(party cheese salad) or his mother being a cheap ass and buying turkey necks to satisfy her fat-ass son. Everything Fatty does can be accounted simply by the fact that he has the taste buds of a toddler, and the patience of one as well when it comes to food(that's how so much ends up simultaneously raw and burnt, as well as him burning the inside of his mouth because he can't just fucking wait like a normal human being until the food cools off to a reasonable temperature). While I'm sure his mother probably came up with other culinary abominations to appease Fatty's demand for calories, he's just got no excuse given where he lived.
I've seen people posit that he might have a food insecurity issue from growing up. That may be possible, but because he's also a retarded cheapskate the end result is that he just fills his gut with garbage. Practically everything he does is just an excuse to eat.
BBQ sauce? So he can pretend to be in the food industry to get food, and of course he had to test it too, which meant more food.
Repeatedly sabotaged recipes even when making a "double batch" by adding hot sauce, chili flakes, etc. knowing his wife would be less likely to eat it, and admitting as much on his own videos.
Ideas for shows, that amount to excuses to eat more food including his son's breakfast with the "playing with your food" bullshit, and any gadget reviews is just an excuse to cook more food.
The freeze dryer and prep shit? More food for Fatty, cheap jerky(not factoring in the cost of buying and running the gadgets of course), freeze dried candy because that was a trend, any stored food needs to be rotated out so that's more food(even the dry stuff) to eat and replace later.
Fat on the go is just an excuse to eat more food and claim he's "working".
Amish month was an excuse to pretend to give a shit about Amish culture, and instead get more food.
The man turned meeting his half sister in NYC, into content as an excuse to eat(and then bitch about) pizza.
Canivore LARP? More meat, we were even able to watch him discuss his day and estimate his calorie intake being 5,000-6,000 just from what he was eating(so ignoring any sodas or snacking we didn't hear about or see).
The church shit? It's mostly deflection for his bad beahvior but you guessed it, it's an excuse for more food. The chili cook off, his church meat smoke-a-thon for the catered men's "retreat", the guy even went to a church event to pack goodie backs for unfortunate kids(I think it was lunches for retards or something?) and grabbed himself cookies. He self reported once that there weren't enough trick or treaters for the king size candy bars he bought, so he got to eat it all instead.
Fatty wants meat and won't be stopped, simple as that.
