01 - Place chicken thighs or breasts in the bottom of the crockpot.
02 - In a medium bowl, whisk together soy sauce, honey, rice vinegar, brown sugar, sesame oil, garlic, and ginger until well combined.
03 - Pour teriyaki sauce mixture over the chicken in the crockpot.
04 - Cover and cook on high for 4 hours or on low for 6-7 hours until chicken is tender and cooked through.
05 - Remove chicken from crockpot and shred or slice as desired.
06 - Mix cornstarch and water to create a slurry. Stir slurry into sauce in crockpot.
07 - Return chicken to crockpot, stir to coat with thickened sauce, and cook for an additional 15-20 minutes on high until sauce has thickened.
08 - Serve teriyaki chicken over steamed rice and garnish with green onions and sesame seeds if desired.