Steps
1. In a skillet, heat olive oil over medium heat. Add the sliced onions and sauté until translucent.
2. Add the diced chicken breast to the skillet. Season with salt and pepper, and cook until browned and cooked through, about 5-7 minutes.
3. In a bowl, whisk the eggs with soy sauce until well combined. Pour the egg mixture over the chicken and onions in the skillet.
4. Cook gently, stirring occasionally, until the eggs are just set but still moist.
5. Sprinkle the shredded cheese on top and cover for a minute until the cheese melts.
6. Serve warm, garnished with chopped green onions if desired.