Spicy prawns with lemon tahini dressing

Ingredients

• 2 tablespoons olive oil
• 2 tablespoons lemon juice
• 1/2 teaspoon salt
• 1/2 teaspoon chilli flakes
• 1/2 teaspoon ground cumin
• 1/2 teaspoon ground paprika
• 500 grams raw peeled prawns
• oil spray for cooking
• shredded iceberg lettuce, diced avocado and diced lebanese cucumber to serve
• Lemon tahini dressing
• 1/4 cup lemon juice
• 1/4 cup tahini
• 1 teaspoon finely grated lemon zest
• 1 teaspoon honey
• 1 clove garlic, crushed
• 1/4 cup olive oil
• 2 tablespoons warm water (approx)
• salt and freshly ground black pepper