Marinate the Chicken: In a bowl, mix soy sauce, sesame oil, olive oil, garlic, ginger, and honey (if using). Add salt and pepper to taste. Slice the chicken into bite-sized pieces and place it in the marinade for at least 30 minutes in the refrigerator.
Preheat the Blackstone Griddle: Heat the griddle to medium-high heat for about 5-10 minutes.
Cook the Chicken: Add a small amount of oil to the griddle. Add the marinated chicken pieces and cook for 5-7 minutes, stirring occasionally until golden brown and cooked through (internal temperature should reach 165°F).
Grill Vegetables: If using vegetables, add them to the griddle once the chicken is almost done. Cook for about 4-5 minutes until tender.