Salmon pitas with hummus

Ingredients

• 2 salmon fillets (about 180g each)
• salt
• 1 tbsp olive oil, plus extra to serve
• 1/2 cup Greek yoghurt
• 2 tbsp lemon juice
• ¼ tsp freshly ground black pepper
• 4 small wholemeal pita breads (around 15cm diameter)
• ¾ cup good-quality hummus
• 1 small Lebanese cucumber, finely diced
• 1/2 red onion, peeled and finely diced
• 1/2 cup finely chopped parsley
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