Preheat a non-stick skillet over medium heat and add 1.5 tsp of olive oil.
In a bowl, whisk the egg whites lightly and season with a pinch of salt and pepper if desired.
Add sliced mushrooms to the skillet and sauté for about 3-4 minutes until they begin to soften.
Toss in the fresh spinach and cook until wilted, about 1-2 minutes, then remove the vegetables from the skillet and set aside.
In the same skillet, cook the turkey bacon slices until they are crispy, about 3 minutes per side. Once cooked, chop them into bite-sized pieces.
Pour the egg whites into the skillet, allowing them to spread evenly. Let the edges set, then gently lift to allow uncooked egg whites to flow underneath.
Layer the sautéed mushrooms, spinach, and chopped turkey bacon over one half of the omelet.
Sprinkle the chopped almonds evenly over the filling for added crunch.
Carefully fold the omelet in half and cook for an additional minute until fully set.
Serve immediately and enjoy this nutrient-packed breakfast.