In a large bowl combine the yoghurt, curry powder, chutney, purée, chilli, garlic and lemon. Mix until smooth. Add the chicken, then mix again to coat.
Cover the dish, then pop in the fridge overnight to let the chicken marinate overnight.
The next day, preheat the oven to 190ºC.
Thread the chicken, peppers, and onion onto skewers. Spray with low-calorie cooking spray.
Pop into the oven for 25-30 minutes until the chicken is cooked through. In a small bowl, combine the yoghurt and coriander. Serve alongside the skewers.