Coconut curry chicken and rice soup

Name: Coconut curry chicken and rice soup
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Cuisine: Asian, Indian
Ingredients: 3 cups vegetable or chicken broth; 1 15-ounce can full fat coconut milk; 2 cups chopped chard or kale; 1/2 cup diced red onion; 1/2 cup diced celery; 1/2 cup diced carrot; 2 stalks lemongrass, cut into several pieces, or grated lemon zest; 1 (1-inch) piece fresh ginger; 1 garlic clove minced; 1 tsp garam masala; 1/2 tsp ground tumeric; 1/2 tsp salt; 1/4 tsp ground black pepper; 1 1/2 Tbsp sugar; 1/2 cup white rice; 2 cups cubed or shredded chicken; Juice of 2 limes; 3/4 cup fresh cilantro; Chili powder (optional)