>>21444823 (OP)They have a contrroversial relationship with certain communities, so I would discount any crap you heard online about them. Angry people be angry.
Just play around with brines, then dredge in flour, then fry. That exchange of plumped up chicken tissue will release moisture and so a second dredging will crust up and make it extra crispy too. I wouldn't dry brine, unless smoking outside. Wet is going to be best for frying. Buttermilk and yogurt chicken has a good history of tenderizing the meat too. There are 13 spices supposedly in KFC's recipe, in the dredge, one of them being msg likely. I just use Tony Cachere's and sometimes a bit of sage or Bell's poultry seasoning too. A lot of people like dill pickles, so the brine mythe could be real or made up. I think Chick Fil A has not actually shared their recipe, neither denied or confirmed.
If you like dill, amp it up, maybe a dill ranch topping, or extra pickles. I wouldn't cook with it.