Chicken and barley soup

Ingredients

• 4 tsp olive oil
• 3 chicken breasts on the bone, skin and fat removed
• 2 onions, chopped
• 4 carrots, peeled and chopped
• 4 celery stalks with leaves, chopped
• 4 zucchinis, chopped
• 8 cups strong rooibos tea
• 1 cup water
• 5 sprigs fresh rosemary
• 2 bay leaves
• 1 cup uncooked barley
• ¼ tsp salt
• lemon juice and black pepper to taste
• 3 tbsp chopped fresh parsley