Couscous Royale

Name: Couscous Royale
Ingredients: 1 bay leaf; 1 cup chicken stock; 1 eggplant, cut into 1in (2.5cm) pieces; 1 large red onion, sliced; 1 lb 5 oz (600g) boneless leg of lamb, cut into bite sized chunks; 1 red bell pepper, seeded and diced; 1 tbsp sweet paprika; 1 tsp ground turmeric; 14.5 oz (400g) can chopped tomatoes; 15 oz (420g) can chickpeas, rinsed and drained; 2 garlic cloves, finely chopped; 2 medium zucchini, sliced; 2 tbsp olive oil; 2¼ cups couscous; 4 tsp harissa (hot Moroccan chile paste); 6 chicken legs, about 3 lb 3 oz (1.5kg); 6 oz (175g) chorizo, thickly sliced; Chopped cilantro, to garnish; Large sprig of thyme; Salt and freshly ground black pepper