Breakfast Egg White Spinach Enchilada Omelets

Name: Breakfast Egg White Spinach Enchilada Omelets
Ingredients: 3 cups egg whites or egg whites from 18 large eggs; 2 tablespoons water; salt and pepper (to taste); cooking spray; 1 tsp olive oil; 1/2 cup scallions (chopped, plus more for garnish); 1 medium ripe tomatoes (diced); 2 tbsp cilantro (chopped); 10 oz package frozen spinach; 4.5 oz can chopped green chiles; kosher salt and fresh ground pepper; 1 1/2 cups grated reduced fat Colby-Jack cheese (*omit for whole30 or paleo); 1 cup green enchilada sauce; 1 medium avocado (diced)