01 - Heat olive oil in a large soup pot or Dutch oven over medium heat. Add chopped onion, carrots, and celery. Sauté for 4-5 minutes, stirring occasionally, until vegetables begin to soften and onion becomes translucent.
02 - Stir in minced garlic and cook for 1 minute until fragrant, being careful not to let it brown or burn.
03 - Add diced chicken to the pot and cook for 3-4 minutes, stirring frequently, until pieces are lightly browned on the outside but not fully cooked through.
04 - Pour in cubed potatoes, chicken broth, water, bay leaf, thyme, and rosemary. Increase heat to high and bring to a rolling boil. Reduce heat to medium-low and let simmer uncovered for 25 minutes, or until potatoes are easily pierced with a fork and chicken is cooked through.
05 - Stir in frozen peas and continue simmering for an additional 5 minutes until peas are heated through.
06 - Remove and discard the bay leaf. Taste the broth and season generously with salt and freshly ground black pepper as needed.
07 - Ladle hot soup into warmed bowls. Sprinkle with freshly chopped parsley and serve immediately.