Place the chicken thighs in an even layer at the bottom of the slow cooker.
In a medium mixing bowl, whisk together the soy sauce, honey, brown sugar, rice vinegar, sesame oil, ginger, garlic, and black pepper until well combined.
Pour the sauce mixture over the chicken thighs.
Cover and cook on low for 4 to 5 hours or on high for 2 to 3 hours until the chicken is tender and reaches an internal temperature of 165 degrees Fahrenheit.
Remove the chicken from the slow cooker and shred with two forks or cut into bite-sized pieces.
Transfer the cooking liquid from the slow cooker to a small saucepan and bring to a simmer over medium heat.
In a small cup, whisk the cornstarch and cold water to create a slurry, then stir it into the simmering sauce.
Continue to simmer the sauce for 3 to 5 minutes until it has thickened into a glaze.
Toss the shredded chicken with the thickened glaze.
Serve the chicken over portions of jasmine rice with steamed broccoli, garnished with sesame seeds and sliced green onions.