If using wooden skewers soak for at least 10 minutes. Toss the chicken with the oil, garlic, ground spices, cayenne, 1tbsp lemon juice and seasoning allow to marinate for 10 minutes or 1 hour if you have time.
Preheat the grill to high. Thread the chicken into the skewers and grill for 10 to 12 minutes turning occasionally or until cooked through with no pink showing.
Meanwhile, prepare the couscous to the packet instructions, then fluff up with a fork. Drizzle with a little olive oil, add the remaining lemon juice, coriander and olives to the couscous and season.
Transfer to serving plates and serve the chicken kebabs with any pan juices and the couscous.
For top tips on protecting you and your family when preparing raw meat and poultry, visit Food Safety in the Home.