In a large pot, heat the olive oil over medium heat. Add the chopped onion, carrots, and celery. Sauté for about 5-7 minutes until the vegetables are softened.
Add the minced garlic and cook for an additional minute until fragrant.
Stir in the diced chicken and cook until slightly browned, about 3-4 minutes.
Pour in the chicken broth and water. Add the dried thyme, dried rosemary, bay leaf, salt, and pepper. Bring the mixture to a boil.
Reduce the heat to low and let it simmer for about 20 minutes, or until the chicken is cooked through and tender.
Remove the bay leaf and shred the chicken into bite-sized pieces with a fork.
Stir in the frozen peas and simmer for another 5 minutes. Adjust seasoning as needed.
Ladle the soup into bowls and garnish with fresh parsley before serving.
Notes
Feel free to add more vegetables or spices to taste.