Make the marinade in a mixing bowl by adding the oil, Mackays Chilli Jam, Worcestershire sauce, garlic, onion, lemon juice, hot sauce, English mustard, BBQ sauce and smoked paprika. Season with salt and pepper and stir to combine.
Place the chicken in a large dish and evenly coat with ¾ of the marinade mixture. Cover with cling film and refrigerate for min. 2 hours.
Heat 2 tbsp of oil in a large non-stick pan. Sear the chicken for approx. 2-3 minutes on each side. Work in batches until all the chicken has been part-cooked.
Transfer the chicken pieces to an oven-proof dish and cover with the remaining marinade mixture. Roast in a preheated oven at 240C / 220C Fan for 20 minutes, or until the chicken has been cooked through.
Garnish with fresh coriander and serve with a fresh salad and buttery roasted corn cobs.