Creating Lemon Rosemary Chicken Soup can be straightforward if you follow these simple steps:

1. Prepare the Chicken: Season the chicken breasts with salt and pepper. Heat olive oil in a large pot over medium heat and add the chicken. Cook for 5-7 minutes on each side until browned and cooked through. Remove from the pot and set aside to cool.

2. Sauté Vegetables: In the same pot, add diced onion, garlic, carrots, and celery. Sauté for about 5-6 minutes until the vegetables are tender.

3. Add Broth: Pour in the chicken broth and bring the mixture to a boil.

4. Shred Chicken: While the broth heats, shred the cooled chicken into bite-sized pieces using two forks.

5. Combine Ingredients: Once the broth is boiling, add the shredded chicken, chopped spinach or kale, rosemary, lemon zest, and lemon juice. Stir well to combine.

6. Simmer: Reduce the heat and let the soup simmer for an additional 15-20 minutes. Taste and adjust seasoning with salt and pepper as needed.

7. Serve: If desired, serve the soup with cooked rice or noodles for added heartiness.

With these straightforward steps, you will create a delicious Lemon Rosemary Chicken Soup that is sure to impress.