Place the chicken in a bowl with the tandoori paste, lemon juice and half of the yoghurt. Stir well to combine, set aside in a cool place for 1 hour, stirring often
Place the chicken in a griddle pan and cook until cooked through and chargrill marks appear on each side until cooked. Remove and set aside. Alternatively you can place the chicken under a hot grill or George Foreman.
In the meantime, preheat the grill and place the flatbread under the grill until warmed through.
When warmed through, remove from the grill, place the salad on top, scatter some chicken over the top and top with your favourite sauce.