2 tbsp oil
2 bell peppers, thinly sliced
½ onion, thinly sliced
1 - 2 tbsp Taco Seasoning
1 lb boneless, skinless chicken breast, cut into bite-sized pieces
2 cups grated Monterey Jack or cheddar cheese
8 medium whole wheat tortillas
2 green onions, thinly sliced (optional)