Heat oil in a medium saucepan over medium-high heat. Add bell pepper, carrot, and onion; sauté 5 minutes or until onion is almost tender. Add barley; sauté 1 minute. Add salt, broth, bay leaf, and thyme sprig. Bring to a boil; cover, reduce heat, and simmer 10 minutes or until barley is tender and liquid is absorbed. Discard bay leaf and thyme sprig. Remove from heat; stir in tomato and next 3 ingredients.