Place the chicken breasts in the crockpot and season with garlic salt, black pepper, garlic powder, onion powder, and Kinder's Buttery Garlic & Herb Seasoning.
Pour the cream of chicken soup and chicken broth over the seasoned chicken.
Cover and cook on HIGH for 3 hours, until the chicken is fully cooked and tender enough to shred.
Shred the chicken directly in the crockpot using two forks.
Add both packets of Knorr Broccoli Cheddar Rice and the frozen broccoli florets to the crockpot. Stir everything together until well combined.
Cover and cook on HIGH for an additional 30 minutes, until the rice is cooked and the broccoli is tender.
Remove the lid, give everything a good stir, then add the shredded cheddar cheese. Mix until the cheese is completely melted and everything is creamy.
Serve hot and enjoy.