Roast chicken with couscous

INGREDIENTS

• 1.75 kg higher-welfare chicken
• 1 lemon, halved
• 2 red onions, peeled and cut into quarters
• 2 carrots, peeled and cut into chunks
• a few sprigs fresh mint, leaves picked and chopped
• olive oil
• 1 heaped teaspoon ground cumin
• 200 g jarred roasted red peppers, drained and roughly chopped
• 1 teaspoon smoked paprika
• 1 tablespoon ground coriander
• 250 g couscous
• extra virgin olive oil