Roast Chicken, Kale & Couscous Traybake - Ainsley Harriott

Ingredients

• 1 tbsp olive oil
• 1 onion, cut into 8 wedges
• 4 cloves garlic, peeled and left whole
• 1 leek, trimmed and cut into 2cm chunks
• 6 chicken thighs, boneless
• Salt and pepper
• 160ml chicken stock
• 1 tbsp white wine vinegar
• 1 packet Ainsley Harriott Lemon and Mint Couscous
• 75g frozen peas
• 75g kale, roughly chopped