Add olive oil to a large skillet.
Place on stovetop over medium heat.
When oil is hot and starts to shimmer, add chicken. Season with salt and black pepper, to taste. Cook, stirring occasionally, until the chicken is browned on all sides, approximately 6 - 8 minutes.
Transfer cooked chicken to a slow cooker.
Add chopped celery, onion, carrots and potatoes.
Top with the bay leaves and dried herbs.
Pour in the chicken stock.
Season with additional salt and black pepper, as desired.
Stir to combine.
Cover and cook on high for 4 hours or on low for 8 hours.
Remove lid and stir to combine.
Remove and discard bay leaves.
Taste and adjust seasonings, as desired.
Serve immediately topped with some fresh chopped parsley.