Heat the oil in a large saucepan over medium heat. Add onion; cook 5 minutes or until tender, stirring frequently. Add tomatoes and garlic; cook 2 minutes, stirring frequently.
Add stock, chipotle, and chickpeas; bring to a simmer. Stir in turkey and salt. Cook 1 minute or until thoroughly heated. Top each serving with 1 tablespoon green onions. Serve with lime wedges.