Tikka cod with caramelised onion

Name: Tikka cod with caramelised onion
Ingredients: 2 skinless cod fillets; greens to serve; 2 tbsp full-fat greek yogurt; 1 lemon juiced; 1 tsp ginger paste; 1 tsp garlic paste; 1 tsp garam masala; 1 tsp mango chutney; 1 tsp tomato purée; 2 tsp olive oil; 2 red onions finely sliced; 1 tbsp mango chutney; 1 tbsp garam masala; 1 tbsp tomato purée; 80g frozen peas; ½ x 400g tin of chickpeas drained and rinsed; 250g cooked rice; handful of baby spinach; 150g full-fat greek yogurt; 2 tbsp chopped coriander leaves; 1 tbsp chopped mint leaves; ½ lemon juiced