One Pot Sicilian Lemon Chicken

• 1 tbsp extra virgin olive oil
• 500 g chicken thigh fillets
• 2 lemons
• 1 brown onion, finely chopped
• 2 tsp cumin powder
• 0.6 cup wholemeal couscous
• 1 cup chicken stock
• 350 g green beans, cut into 1-inch pieces
• 0.5 cup Sicilian green olives, pitted
• 0.5 cup parsley, roughly chopped (optional)