01 - Arrange chicken thighs or breasts in the slow cooker in a single, even layer.
02 - Whisk together soy sauce, honey, rice vinegar, brown sugar, minced garlic, grated ginger, and sesame oil in a small bowl until well combined. Pour the mixture evenly over the chicken.
03 - Cover and cook on low setting for 4 hours, or until the chicken is tender and easily shredded with a fork.
04 - Transfer cooked chicken to a plate and set aside temporarily.
05 - Combine cornstarch and water in a small bowl to create a slurry. Whisk the mixture into the cooking liquid remaining in the slow cooker. Cover and cook on high heat for 10-15 minutes until the sauce reaches desired consistency.
06 - Shred the chicken using two forks, return it to the slow cooker, and toss thoroughly with the thickened teriyaki sauce. Serve hot, garnished with sliced green onions and toasted sesame seeds.