Crispy Smashed Potato Salad

Name: Crispy Smashed Potato Salad
Ingredients: 4 tbsp extra virgin olive oil; 1 tsp cumin; 1 tsp mild chilli powder; 1 tsp turmeric; 0.5 tsp garlic granules; 0.5 tsp onion granules; 1 tsp salt; Lots black pepper; 500 g 0% fat greek yoghurt; 1 tsp wholegrain mustard; 1 cucumber (deseeded and chopped); 3 cloves garlic (crushed); 1 lemon juice; A bunch chives (finely chopped); A generous handful fresh dill (finely chopped); salt (to taste); black pepper (to taste); 2 roast chicken breast fillets (store-bought); 800 g Maris piper potatoes (peeled)