If desired, line slow cooker with a liner.
Place chicken and salsa in a 5-7 quart slow cooker.
Cover and set on high for 3 hours. After 2 hours, check the temperature of the chicken with an instant-read thermometer. Once chicken is at 165°F, it’s done cooking.
Alternately, set the crockpot to low for 4-6 hours and start checking it after 3 hours.
Shred the chicken with two forks and stir it up with the salsa.
Serve on salad, plain, or in tacos.
Store leftovers in the refrigerator for up to 3 days or freeze for up to one month.