How to Make It
Heat a Dutch oven over high heat. Add oil; swirl to coat. Add chicken; cook 4 minutes, browning on all sides. Add garlic; cook 30 seconds. Add stock; bring to a boil. Add tortellini; reduce heat to medium, and simmer 6 minutes or until tortellini are done. Stir in spinach, salt, and pepper. Divide soup among 6 bowls; top evenly with tomato and pesto.