Melt the butter in a Dutch oven over medium heat. Add the onion, celery, and carrots. Cover and cook for about 10 minutes, or until the vegetables are softened.
Add the minced garlic and cook for about 2 minutes.
Sprinkle in the flour and cook for about 2 minutes, stirring constantly.
Stir in the chicken stock. Season with garlic powder, onion powder, paprika, celery salt, thyme, parsley, and chicken bouillon.
Stir in the half & half, then add the gnocchi, shredded rotisserie chicken, Parmesan cheese, and spinach.
Cover and cook for about 10 minutes, or until the gnocchi is tender and the soup is heated through.
Serve warm and enjoy!