Niçoise chicken salad - Good Food Middle East

Ingredients

• 2 tbsp rapeseed oil
• juice 1 lemon
• 1 tsp balsamic vinegar
• 1 garlic clove, grated
• ? small pack basil, leaves chopped
• 3 pitted black Kalamata olive, rinsed and chopped
• 2 skinless chicken breasts
• 1 tsp rapeseed oil
• 250g new potatoes, thickly sliced
• 200g fine green beans
• ½ red onion, very finely chopped
• 14 cherry tomatoes, halved
• 6 romaine lettuce leaves, torn into bite-sized pieces
• 6 pitted black Kalamata olive, rinsed and halved