Place the chicken thighs in the bottom of the slow cooker in a single layer.
In a small bowl, whisk together honey, soy sauce, rice vinegar, garlic, and ginger.
Pour the sauce over the chicken, making sure it’s mostly submerged.
Cover and cook on low for 4–5 hours, or on high for 2–3 hours, until chicken is tender.
Remove chicken and shred it with two forks. Return shredded chicken to the slow cooker.
In a small bowl, mix cornstarch and water. Stir into the sauce and cook on high for 10–15 minutes until thickened.
Stir the chicken to coat with sauce. Serve over rice or noodles. Top with green onions and sesame seeds.