1. Heat the oil in a large saucepan over medium heat. Add the garlic; cook until golden, 1-2 minutes. Pour in wine; heat to a boil. Cook until the wine is slightly syrupy, about 6 minutes. Stir in the chicken broth; heat to a boil. Add the tortellini; cook according to manufacturer's directions.
2. About 2 minutes before the pasta is done, stir in the spinach; cook until the spinach wilts slightly. Season with pepper to taste. Ladle into bowls; sprinkle with Parmesan cheese. Garnish with oregano.