Season the chicken breasts with 1/2 teaspoon salt and 1/4 teaspoon pepper.
Pour the stock into the inner pot and then add the chicken breasts. Place the carrots and potatoes on top of the chicken and season them with the rest of the salt and pepper. Secure the lid.
Press the Manual or Pressure Cook button and adjust the time to 15 minutes.
When the timer beeps, let pressure release naturally until float valve drops and then unlock lid.
Transfer to plates to serve and spoon the juices on top.