Given a list of ingredients, produce a shopping list for a recipe.

Ingredients:
- 2 cups of cooked chicken
- 2 cups cooked spinach
- 2 tablespoons olive oil
- 2 tablespoons butter
- 2 teaspoons garlic powder
- 1 teaspoon ground black pepper
user
Shopping List:
- 2 cups cooked chicken
- 2 cups cooked spinach
- 2 tablespoons olive oil
- 2 tablespoons butter
- 2 teaspoons garlic powder
- 1 teaspoon ground black pepper
assistant