Prepare Chicken: Place chicken breasts in the crockpot.
Mix Seasonings: In a small bowl, combine taco seasoning, cumin, chili powder, garlic powder, onion powder, cayenne, salt, and pepper.
Add Liquids: Pour in diced tomatoes, green chilies, and chicken broth over the chicken.
Cook: Set the crockpot on low and cook for 4-6 hours, or until chicken is tender and shreds easily.
Shred Chicken: After cooking, shred the chicken using two forks and mix it with the sauce.
Serve: Garnish with fresh cilantro and serve with rice, tortillas, or in tacos.