In a small bowl, whisk together soy sauce, honey, sesame oil, rice vinegar, garlic, and ginger.
Place the chicken thighs in the crockpot and pour the sauce over them.
Cook on low for 4-5 hours or on high for 2-3 hours, until the chicken is tender.
Remove the chicken from the crockpot and shred it using two forks.
In a small bowl, mix water and cornstarch to create a slurry. Add it to the sauce in the crockpot and stir well.
Let the sauce thicken for 5-10 minutes on high heat.
Return the shredded chicken to the crockpot and mix with the sauce.
Garnish with sesame seeds and scallions before serving.