Preheat the oven to 180°C. Spread the macadamias on a baking tray and bake for 3-5 minutes until light golden. Cool and chop. Set aside.
Bring a large frying pan of water to the boil. Add the chicken, reduce heat to medium-low and simmer the chicken for 12 minutes. Transfer to a plate to cool.
Combine the lettuce, longans and sprouts. Place the oil, juice, mint and sugar into a screwtop jar. Shake until combined.
Drizzle the dressing over the salad and toss to combine. Slice the chicken and serve with the salad. Sprinkle with macadamias to serve.