Prep the slow cooker: Lightly spray the insert with nonstick spray or rub with a little oil to make cleanup easier.
Season the chicken: Place the chicken in the slow cooker. Sprinkle with salt, pepper, garlic powder, onion powder, and smoked paprika.
Add sauce and butter: Pour the Buffalo sauce over the chicken. Add the butter and honey (or brown sugar) if using.
Cook low and slow: Cover and cook on Low for 4–5 hours or on High for 2.5–3.5 hours, until the chicken is fork-tender and shreds easily.
Shred the chicken: Remove the chicken to a cutting board and shred with two forks, or use a hand mixer on low in a bowl.
Finish the sauce: Whisk 1 tablespoon apple cider vinegar into the sauce in the slow cooker for brightness (add more to taste).
Stir in ranch or blue cheese dressing if you want a creamier finish.
Combine: Return the shredded chicken to the slow cooker and toss to coat in the sauce. Let it sit on Warm for 10–15 minutes so it absorbs flavor.
Serve: Pile onto slider buns, stuff into tortillas, spoon over rice or cauliflower rice, or top a salad. Add celery, carrots, ranch, or blue cheese as you like.