In a soup pot, heat oil and add onion, green pepper and carrots.
Cook for 3-4 minutes
Add chicken to pot
Add garlic to pot.
Stir together and cook until garlic is fragrant
Add stock and bring to boil. Cook until carrots are cooked
Mix together flour and butter together to form a roux.
Add half & half, roux, parsley and Worcestershire sauce to soup.
Add salt & pepper to taste.
Simmer for 10-15 minutes. Serve.