Layer the base: Add the diced tomatoes, green chiles, onion, corn, black beans, and chicken broth to the slow cooker. Stir to combine.
Season the chicken: Place the chicken on top.
Sprinkle with taco seasoning, cumin, smoked paprika, garlic powder, onion powder, salt, and pepper. Lightly press the chicken into the mixture so it’s coated.
Cook low and slow: Cover and cook on Low for 4–6 hours or High for 2.5–3.5 hours, until the chicken is tender and easily shreds.
Shred and finish: Remove the chicken to a plate and shred with two forks. Return it to the slow cooker, stir in the lime juice, and taste.
Adjust salt, pepper, or heat (a pinch of cayenne or hot sauce) if needed.
Build your bowls: Spoon hot rice into bowls. Top with a generous scoop of taco chicken and sauce. Add your favorite toppings — cheese, avocado, cilantro, sour cream, and a squeeze of lime are classic.