To make the brine, combine 2 cups buttermilk with salt, paprika, garlic powder, and black pepper in a large plastic or glass bowl,
Submerge the chicken thighs fully in the brine. Cover and refrigerate overnight, or for at least 4–5 hours.
Preheat your smoker to 225–250°F using a light fruit wood like peach or apple.
Remove thighs from the brine and wipe off excess. Reserve 2 cups of buttermilk. Place on a wire rack over a tray and season both sides with chicken rub.
Smoke for about 45 minutes, or until the chicken reaches 135–140°F or takes on a nice golden color.
Smoke chicken thighs for around 45 minutes, or until you are happy with the color, or until chicken reaches 135-140F.
While the chicken is smoking, in one bowl, mix all flour coating ingredients. In a second bowl, add the remaining 2 cups of buttermilk.
About 10 minutes before the thighs finish smoking, preheat your oil to 300–325°F in a deep fryer or heavy pot.
Dip each thigh in buttermilk, then dredge in the flour mixture. For extra crunch, repeat the dip and dredge.
Gently place thighs into the oil, 2–3 at a time. Fry for 3–4 minutes or until golden and cooked through (165°F internal temp).
Transfer to a wire rack over a tray and keep warm in a low oven while frying the rest.
Drizzle with honey or maple if desired and enjoy.