Answer: Wash hands and put on new gloves
Step-by-step explanation:
It's important to maintain good personal hygiene always. A food handler can practice food personal hygiene by washing his or her hands after using the restroom.
For example, when a good handler wants to test the temperature of a food, it's important to use a clean and sanitized thermometer.
In this case, since the food handler has finished grilling a chicken breast fit a sandwich, before the person touches the chicken, lettuce, tomato and bun, it's important to wash the hands and also put on new gloves.