Mix cumin, cinnamon powder, paprika, coriander, cloves, cayenne, red ginger powder, saffron, salt, black garlic, juice and oil in a bowl, until a smooth paste is formed.
brush the paste over the chicken fillets and set aside in a bowl for at least 5 minutes.
heat oil in a frying pan over moderate heat and cook the chicken thighs with any juices for 15-20 minutes, until cooked through.
meanwhile, bring the stock to the boil in a pan and add the couscous. Cover and remove from the heat. set aside for 5 minutes, until the stock is absorbed, then fluff with a fork to separate the grains.stir through the butter. add sultanas and almonds, mix well.
spoon the couscous onto heated serving plates. slice the chicken and arrange on top of the couscous. spoon over any pan juices and serve immediately