Cut the chicken thighs into bite-sized pieces.

In a mixing bowl, combine the chicken pieces with teriyaki sauce and marinate for at least 10 minutes.

Heat a skillet over medium heat and add the marinated chicken.

Cook for about 10-12 minutes, stirring occasionally, until the chicken is cooked through and slightly caramelized.

In the same skillet, add the mixed vegetables and stir-fry for 5-7 minutes until tender.

In serving bowls, place a portion of cooked rice, top with the teriyaki chicken and vegetables.

Garnish with sesame seeds and sliced scallions.