Chilli chicken with BLT salad

Ingredients

• Buttermilk dressing
• 1/3 cup (80ml) buttermilk
• 1/4 cup (60g) sour cream
• 1 tablespoon finely chopped fresh chives
• 1 tablespoon finely chopped fresh dill
• 1 tablespoon white wine vinegar
• 1 clove garlic, crushed
• 4 chicken thigh fillets (800g), each cut into 3 pieces
• 1 teaspoon chilli flakes
• 1/2 teaspoon sea salt flakes
• 1 tablespoon olive oil
• 8 thin slices ciabatta (200g)
• cooking oil spray
• 4 rindless bacon slices (260g)
• 1 butter (boston) lettuce, leaves separated
• 2 medium tomatoes (300g), sliced
• 1 medium avocado (250g), sliced