Za’atar Chicken Wrap

• 2 Lebanese bread
• 2 chicken thigh fillets
• 2 tsp za’atar spice
• 2 tsp sumac
• 0.5 cup greek yoghurt
• 2 tbsp fresh mint leaves, finely chopped
• 1 tbsp extra virgin olive oil
• 0.5 lemon, juiced
• 1 cucumber, finely chopped
• 0.25 cup pickled onion
• 2 cup iceberg lettuce, roughly chopped