Preheat the oven to 180°C.
Mix together all the ingredients for the spice mix and use half to coat the chicken pieces.
Spray the casserole pan with low calorie cooking spray and place over a medium to high heat. When hot, add the chicken pieces and cook for 2 minutes each side. Remove from pan and place to one side.
Give the pan another spray and add the onions and peppers. Sauté for 5 minutes until beginning to soften.
Add the beans and courgette, then add the remaining spice mix and garlic. Cook for one minute, stirring to ensure everything is well combined.
Stir in the rice, then add the tomatoes, stock and lemon juice.
Stir in the tomato puree, then return the chicken pieces to the pan.
When it begins to bubble, cover with a tight fitting lid and place in the preheated oven for 30 minutes.
Remove from the oven and serve with the lemon wedges.