Whisk cornstarch, salt, and black pepper together in a large bowl; add chicken and toss to coat.

Heat oil in a skillet over medium-high heat. Fry chicken in batches, turning occasionally, until lightly browned, about 5 minutes.

Whisk together honey, soy sauce, rice vinegar, chile-garlic sauce, garlic, ginger, sesame oil, and 1 tablespoon sesame seeds in a small bowl.

Pour sauce over chicken in the skillet; toss to coat chicken. Reduce heat to medium-low; simmer until sauce thickens and chicken is no longer pink in the center and the juices run clear, about 2 minutes. An instant-read thermometer inserted into the center should read at least 165 degrees F (74 degrees C), about 2 minutes.

Sprinkle with remaining 1 tablespoon sesame seeds and chopped green onions.