Add the tenders, buttermilk, eggs, hot sauce, and seasonings in a large bowl. Mix to combine. Marinade tenders for 1-2 hours in the fridge or overnight.
In a separate large bowl, whisk together the flour, cornstarch, baking powder and seasonings. Drizzle some of the wet batter into the flour mixture to form a crumbly texture (optional).
Double coat the tenders by first dredging in the flour mixture, then dip back into the wet batter and lastly back into the flour mixture. Transfer the tenders to a parchment lined baking sheet and rest for 10 minutes before frying.
Heat up oil in a heavy-bottom pan or skillet to 350F. In batches, fry the tenders for 3 to 4 minutes per side or until golden brown and cooked through.
Transfer cooked tenders to a wire rack set over a paper towel lined baking sheet to catch excess oil. Reserve 1 cup of the frying oil.