Add 1 pound boneless, skinless chicken breasts pieces, 3 tablespoons cornstarch. and ½ teaspoon salt to medium mixing bowl. Toss or stir ingredients together until chicken pieces are evenly coated in cornstarch and salt. Set aside.
Line large plate with 2 to 3 layers of paper towels. Set aside.
Place large skillet on stovetop over medium heat. When skillet is warm, add ¼ cup neutral-flavored oil then swirl and tilt pan as needed to distribute oil across entire surface of pan. Continue heating skillet until oil is hot and shimmery.
When oil is ready, place chicken pieces in skillet in one even layer, working in batches as needed to avoid overcrowding pan.
Cook chicken 3 to 4 minutes or until lightly browned, then flip chicken pieces over and cook 3 to 4 minutes more, until chicken is cooked through.
Transfer fully cooked chicken pieces to large plate lined with paper towels and set aside. Repeat process with any remaining chicken until all chicken has been cooked.