Place the chicken breasts in your crockpot.
In a small bowl, stir together BBQ sauce, brown sugar, apple cider vinegar, garlic powder, and onion powder.
Pour the mixture over the chicken, ensuring it’s well coated.
Cover and cook on LOW for 5–6 hours or HIGH for 3–4 hours until the chicken is tender and easily shredded.
Shred the chicken with two forks directly in the pot. Give it a good stir to mix with all the saucy goodness.
Taste and add salt and pepper as needed.
Serve hot on toasted buns or however your BBQ-loving heart desires.