Open chicken Caesar sandwich - Good Food Middle East

Ingredients

• 2 skinless chicken breasts
• 1 tsp sunflower oil
• 2 Little Gem lettuces
• 2 tbsp low-fat crème fraîche or Greek yogurt
• 1 tbsp grated parmesan, plus a few shavings, to serve
• squeeze lemon juice
• 1 tsp caper, roughly chopped
• 2 thick slices bread
• 1 small garlic clove, cut in half