ALWAYS follow the instructions from the manufacturer, even if my recipes contradicts the method in case methods have been updated. The larger the chicken breasts the longer they will take to cook. Make sure to let the pressure release naturally as it ensures that the chicken is cooked properly. Chicken breast needs to be cooked to a temperature of 165 °F to be safely eaten.
All calories and info are based on a third party calculator and are an estimate. Actual nutritional info will vary with brands used, your measuring methods etc.