Feel good veggie soup

Name: Feel good veggie soup
Cuisine: Japanese, Asian
Ingredients: 1 tablespoon avocado oil or olive oil; 3 cloves garlic, minced; 2 onions, finely diced; 6 large carrots, diced; 6 ribs celery, diced; 1-1/2 inch piece fresh ginger, grated or 1/4 teaspoon ground ginger; 1 teaspoon ground turmeric; 1/2 teaspoon fine sea salt, more to taste; 1/4 teaspoon freshly ground black pepper, more to taste; 6-8 cups chicken broth, veggie broth, or bone broth; homemade or store-bought; 2-3 cups chopped kale or fresh spinach; 2 tablespoons lemon juice (about 1/2 lemon); Parsley, for garnish; Optional: 3 cups rotisserie chicken