Place the chicken breasts at the bottom of the slow cooker.
Add the black beans, corn, salsa, diced tomatoes with green chilies, and taco seasoning on top of the chicken.
Pour in the chicken broth and stir gently to combine.
Cover and cook on low for 6–8 hours or high for 3–4 hours, until the chicken is tender and fully cooked.
Remove the chicken, shred it using two forks, and return it to the slow cooker. Stir everything together.
Taste and adjust seasoning, if needed (add salt or more taco seasoning).
Serve hot with your favorite toppings like tortilla chips, shredded cheese, or Greek yogurt.