One Pot Indian Roast Chicken

Name: One Pot Indian Roast Chicken
Cuisine: Asian, Indian
Ingredients: 1.5kg whole chicken; 2 large onions, peeled and cut into thick slices; 1 tbsp rapeseed oil; 1 lemon, halved; 2 large garlic cloves, crushed; 1 tbsp freshly grated root ginger; 1 tsp ground cumin; 2 tsp ground coriander; 2 tsp garam masala; 1 tsp hot paprika; 1 tbsp ground turmeric; 2 tbsp rapeseed oil; 250ml natural yogurt; sea salt and freshly ground black pepper; For the couscous; 3 cardamom pods; 200g couscous; 2 tsp vegetable stock granules; handful fresh coriander leaves, roughly chopped; 100g toasted silvered almonds; Large bowl x 2; Large food bag, or covered in a non-metallic dish; Foil; 3.8