Spray the insert of a 6–8 quart slow cooker with cooking spray.
Trim any excess fat from the chicken and place the pieces in the bottom of the slow cooker in a single layer when possible.
Sprinkle 1 teaspoon of taco seasoning over the top of the chicken, flip the pieces, then sprinkle the remaining 1 teaspoon over the other side.
Top the seasoned chicken with the drained beans, then the frozen corn, and pour the salsa over everything.
Cover and cook on LOW for 5–6 hours or on HIGH for 3 hours, until the chicken reaches 165°F (73°C).
Remove the cooked chicken to a cutting board and shred it with two forks.
Return the shredded chicken to the slow cooker, add the juice of 1 lime, stir to combine, and heat for a few minutes to meld flavors.
Serve the salsa chicken over rice or in tortillas and top with cilantro, shredded cheese, sour cream, pickled jalapeño, or other desired toppings.