Place all dressing ingredients into the Thermomix bowl and blend 20 sec/speed 8. Reserve until ready to serve.
Heat a griddle pan over a high heat. Cut the cheeks from the mangoes, without peeling and sprinkle with a little bit of brown sugar. Oil the pan generously and cook each mango cheek, face down, until well caramelized. Set aside. Cook each chicken breast, until well charred and marked. Turn heat down to medium heat, cover and cook until cooked through completely. Rest chicken, covered in pan with heat turned off.
Prepare salad ingredients and place onto a serving platter. Top with all remaining ingredients including mangoes and sliced chicken and drizzle with dressing, garnish with macadamias.