In a medium bowl, combine egg substitute with soy sauce and mix well. Add chicken breast, bean sprouts, and 1 tbsp scallions. Gently stir and set aside.
Bring a small skillet (with a lid) sprayed with non-stick spry to medium heat on the stove. Evenly add egg mixture to the skillet. Cover and cook, without scrambling, for about 6 minutes, until egg is mostly cooked and the underside has lightly browned.
Carefully flip omelette and continue to cook (uncovered, without scrambling) for about 2 minutes, until egg is fully cooked.
Serve and top with remaining 1 tbsp scallions. If you like, top with Tabasco sauce.