Chop the carrots, celery, onions and sweet potato.
In a large saucepan, add a drizzle of olive oil and pour the onions into the pan.
Gently fry till they are translucent (approx 5-6 minutes) and then add the other veggies with the stock.
Add in the chicken breasts (whole) and they are fully submerged in the stock.
Simmer for 40 minutes on a low heat and relaxx
After this time, remove the chicken from the soup and shred it using two forks.
Pop the chicken back in and squeeze the juice of half a lemon into the saucepan.
Serve up salt to taste and lots of black pep and a sprinkle of fresh parsley.