Place the chicken thighs into a bowl with the buttermilk, Frank's hot sauce, salt, and pepper. Mix to combine and marinate for 4 hours, up to 48 hours.
In a clean bowl, combine all of the flour seasoning ingredients. Set aside.
Add the ranch ingredients to a bowl, mix well, and place in the fridge.
Add all of the hot honey sauce ingredients to a saucepan over medium heat and whisk to combine. Once the butter has melted, remove from the heat.
Heat a large, high-rimmed pan or pot with enough oil to fill it halfway, to 180°C (350°F).
Remove the chicken from the buttermilk and dredge in the seasoned flour, shaking off excess. Double-coat if preferred. Fry in the hot oil for 10–12 minutes, or until golden, crispy, and the internal temperature reaches 74°C (165°F). Repeat with the remaining batches.
Add the cooked chicken to a large mixing bowl and pour over the hot honey sauce. Mix well to coat.
Toast the buns to your liking. Spread ranch sauce on both the top and bottom buns. Add the crispy chicken, top with pickles, and close the bun. Dig in.