In a medium bowl, whisk together honey, soy sauce, minced garlic, apple cider vinegar, sesame oil, and ground ginger until well combined.
Season the chicken thighs with salt and pepper and place them in the slow cooker.
Pour the honey garlic mixture over the chicken, making sure it is evenly coated.
Add the mixed vegetables to the slow cooker, distributing them around the chicken.
Cover the slow cooker with the lid and cook on low for 6 hours or on high for 3 hours, or until the chicken is fully cooked and tender.
If you’d like to thicken the sauce, mix 1 tablespoon of cornstarch with 2 tablespoons of water to form a slurry and stir it into the sauce. Cook for an additional 30 minutes on high.
Once cooked, shred the chicken with two forks and mix it with the sauce and vegetables.
Serve hot, garnished with chopped green onions if desired.