Add the chicken and marinade ingredients to a bowl and mix well to combine. Cover and marinate for 30 minutes up to 48 hours.
In a separate bowl, mix the plain flour, cornflour, and spices. Pull the chicken out of the fridge and dredge it in the flour until well coated. You can double-coat if you want that extra crunch — place it back into the marinade after the first dredge and repeat.
Heat 1.5 litres (6⅓ cups) of neutral oil in a large pot or deep fryer to 170°C (340°F). Fry the chicken until golden and the internal temperature reaches 74°C (165°F), roughly 6–8 minutes. Remove and drain on a wire rack over a baking tray.
Mix the honey butter glaze ingredients in a bowl, pour over the fried chicken while it's still hot, and toss to coat.
For the coleslaw, mix the cabbage, carrot, and onion. In a separate bowl, whisk the mayonnaise, apple cider vinegar, and Dijon mustard until smooth. Add the sauce to the vegetables, mix well, and season to taste.
Toast your buns, spread with a sauce or mayonnaise of choice, and add the chicken, slaw, and pickles (optional). Close the lid and dig in.