In a pot with the vegetable oil, saute the carrots, celery, green pepper and onion until the vegetables are soft.
Add the chicken thighs, skin side down, until the chicken is browned. Remove and set aside.
Add the chicken broth to the pot and scrape the bottom of the pot to deglaze the pan.
Add the thyme, sage, salt and pepper and stir. Allow to simmer.
Debone the chicken and cut up the biscuits into quarters.
Add the chicken and the frozen peas to the soup and bring to a rolling boil.
Drop in the biscuit quarters and push the biscuit down into the broth with a spoon or spatula.
Continue to boil for about 5 minutes until the biscuits are done. To determine if the biscuits are done, take a quarter piece out and taste. If it is cold or seems doughy on the inside, continue to boil for a few more minutes and test again.
To serve, ladle the soup into bowls and garnish with some fresh chopped parsley.