Add the olive oil in a large, lidded pan over a medium heat. Once hot, add all of the vegetables and fry for 4-5 mins until they start to soften. Keep stirring while you do this.
Next add the shredded chicken and stir.
Add the (hot) stock to the pan, stir well and then place the lid on. Bring to the boil then turn down to a low heat. Simmer for 15 minutes, until the vegetables are soft.
Remove the lid, stir in a stock pot until dissolved, and then season with salt and pepper to taste. Serve up straight away or portion up and freeze.