Boil chicken breast in water until fully cooked (about 8–10 minutes). Shred or slice thinly.
In a pot, bring chicken broth to a gentle simmer. Add corn, garlic powder, white pepper, and salt.
Stir in corn starch slurry and simmer until slightly thickened.
Add shredded chicken and simmer for 1–2 more minutes.
Lower heat, then slowly drizzle in the beaten egg and egg whites while stirring gently in one direction to create ribbons.
Stir in sesame oil, adjust seasoning, and garnish with scallions.
