How to Make It
In a stockpot, heat the olive oil over medium-high heat. Stir in the onion and garlic and cook until soft and translucent, 2 to 3 minutes.
Stir in chicken stock, Worcestershire sauce, Dijon mustard and cooked chicken. Bring to a gentle boil and then reduce heat and simmer for 3 minutes. Stir in the kale and simmer for 5 minutes or until kale is tender.
Stir in the lemon juice and season with salt and pepper to taste. Garnish with cheese and serve hot.