1. Season the chicken with salt and pepper, to taste. Heat oil in a dutch oven over high heat. Add chicken and cook, stirring occasionally, until brown on all sides, about 6 minutes total. Transfer to a plate.
2. Add carrots and onions to the dutch oven and cook, stirring often, until onions begin to soften, about 4-5 minutes. Add garlic and cook for about 30 seconds, stirring nonstop. Add 1/2 cup chicken stock while stirring and scraping to loosen browned bits from the bottom of the dutch oven.
3. In a small bowl, whisk together flour and 1/2 cup broth; add to the dutch oven. Stir in chicken and remaining 4 cups of chicken broth. Add bay leaf and season with salt and pepper, to taste. Bring to a boil, reduce heat to medium-low and simmer 25 minutes, partially covered.
4. Add potatoes and cook uncovered until potatoes are tender, about 18-20 minutes. The liquid will slightly reduce even further. Stir in parsley and discard bay leaf before serving.