Place the bacon in a cold skillet and turn heat to medium, cooking until the fat renders and the strips are perfectly crispy.
While bacon cooks, whisk together the whole eggs, egg whites, Greek yogurt, sea salt, and black pepper in a bowl until smooth.
Remove bacon to a paper towel-lined plate, leaving a small amount of fat in the pan, and add the ghee and baby spinach.
Sauté the spinach until just wilted, then reduce the heat to low before pouring in the egg mixture.
Gently fold the eggs with a spatula, moving them constantly until they form soft, creamy curds that are barely set.
Plate the eggs immediately, top with chopped fresh chives, and serve with the reserved crispy bacon.