Coat the chicken pieces in buttermilk, cover and set aside to marinate in the fridge for at least an hour (or overnight if possible).
When the chicken is ready, heat the oven to 180°C. Add the Kentucky coating to a shallow bowl and coat the chicken pieces completely.
Spread the pieces out on a tray lined with baking paper, drizzle with olive oil and bake for 35-40 minutes until golden brown.
While the chicken cooks, arrange the salad leaves in two bowls. Top with finely sliced radishes, chopped avocado, cucumber ribbons and sprouts.
Add all the dressing ingredients, except for the salt, pepper and water, into a food processor and blitz quickly until smooth.
Season with salt and pepper to taste. If the dressing is too thick to pour, thin out with a little water and blitz again.
When the chicken is cooked, remove it from the oven and slice, then arrange on the salad.
Dollop the dressing over the top of the chicken and salad, garnish with fresh herbs, and serve immediately.