Fragrant Chicken Soup with Chickpeas and Vegetables

Name: Fragrant Chicken Soup with Chickpeas and Vegetables
Ingredients: 2 tablespoons olive oil; 1 Spanish onion, chopped; 1/2 teaspoon kosher salt, more to taste; 3/4 teaspoon ground cinnamon; 3/4 teaspoon ground turmeric; 1/2 teaspoon sweet paprika; 1/2 teaspoon ground ginger; 1/4 teaspoon freshly grated nutmeg; 1/4 teaspoon ground black pepper; Pinch of cayenne; 2 tablespoons tomato paste; 2 celery stalks, diced; 1 turnip, peeled and diced; 1 sweet potato, peeled and diced; 1 quart chicken broth; 1 3/4 pounds boneless, skinless chicken thighs, cut into bite-sized pieces; 1 can (15 ounces) chickpeas, drained; 1/2 cup chopped cilantro, more for garnish; 1 tablespoon fresh lemon juice; Lemon wedges, for serving