Creating Slow Cooker Mexican Shredded Chicken is simple and straightforward. Just follow these steps:

1. Prepare the Slow Cooker: Place the boneless, skinless chicken breasts at the bottom of the slow cooker.
2. Add the Broth: Pour the chicken broth over the chicken to keep it moist during cooking.
3. Add the Vegetables: Layer in the diced onion, minced garlic, black beans, corn, and diced tomatoes with green chilies.
4. Season: Sprinkle the taco seasoning, cumin, chili powder, garlic powder, salt, and pepper evenly over the ingredients.
5. Mix and Cover: Gently stir the ingredients to combine, then cover the slow cooker with its lid.
6. Cook: Set the slow cooker to low for 6-8 hours or high for 3-4 hours, cooking until the chicken is tender and easily shredded.
7. Shred the Chicken: Once cooked, remove the chicken from the slow cooker and shred it using two forks.
8. Combine: Return the shredded chicken to the slow cooker and stir it into the juices and vegetables.
9. Taste and Adjust: Check for seasoning and adjust with more salt, pepper, or spices if needed.
10. Serve Warm: Allow the mixture to warm through for a few minutes before serving.

These steps will guide you in creating this incredible dish effortlessly.