Preheat the oven to 190°C and spray the tray with low-calorie cooking spray.
Add the chicken, onion and pepper to the tray.
In a bowl combine the passata, chipotle paste, tomato purée, sweetener, paprika, garlic and onion granules. Mix until smooth.
Pour over the chicken and vegetables and toss to coat. Cook for 25 minutes.
Sprinkle over the rice pouches and stir, return to the oven for 10 minutes, remove and serve.