Place the chicken breasts in a shallow dish or resealable plastic bag. Pour half the teriyaki sauce over the chicken, ensuring that it's evenly coated. Cover the dish or seal the bag, then refrigerate for at least 30 minutes to allow the flavors to infuse.

Preheat your air fryer to 400 degrees F for about 3-5 minutes. This helps create the perfect cooking environment for the chicken.

Once preheated, remove the chicken breasts from the marinade, shaking off any excess. Place the chicken in the air fryer basket in a single layer, ensuring they're not overlapping. Season with salt, pepper and spray with cooking spray.

Cook the chicken in the air fryer for 15-17 minutes, flipping halfway through the cooking time. The chicken should be golden brown on the outside and cooked through with no pink in the center.

About halfway through the cooking process, brush the chicken breasts with the remaining teriyaki sauce for extra flavor and a beautiful glazed finish.

Once the chicken is cooked, remove it from the air fryer and let it rest for a few minutes. This allows the juices to redistribute, ensuring moist and tender chicken. Garnish with sesame seeds and chopped green onions for added flavor and visual appeal. Serve the teriyaki chicken breasts over a bed of rice and a side of vegetables for a complete meal.