Chicken and Sweet Potato Salad

Ingredients

• 1 kg orange sweet potatoes (kumara) (scrubbed and sliced)
• 4 boneless skinless chicken breasts (about 150 g (5 oz) each)
• pinch ground cumin
• pinch ground cinnamon
• 4 cups mixed salad leaves
• 4 tomatoes (cut into thin wedges)
• 1/4 telegraph (long) cucumber (sliced)
• 2 tbsp fresh coriander (cilantro) (chopped)
• 2 tbsp sunflower seeds (toasted)
• 2 spring onions (scallions) (shredded)
• 1/2 ripe pineapple (about 350 g (12 oz), chopped)
• 1/2 red pepper (diced)
• 1/2 small red onion (finely chopped)
• 2 tbsp fresh mint (chopped)
• 1/2 tsp mild chili powder
• Juice of 1/2 lime
• 2 tbsp vegetable oil
• 1 tsp caster (superfine) sugar
• dash soy sauce (or to taste)