In a medium bowl, whisk together the whole eggs and liquid egg whites until the mixture is frothy and well-aerated.
Place a non-stick skillet over medium-low heat and add the ghee, swirling to coat the bottom of the pan.
Add the fresh baby spinach to the skillet and sauté for about 1 minute until the leaves are just wilted.
Pour the egg mixture into the pan and let it sit undisturbed for 30 seconds until the edges begin to set.
Use a silicone spatula to gently push the eggs from the edges toward the center, creating large, soft curds.
Sprinkle the crumbled feta cheese, sea salt, and black pepper over the eggs while they are still slightly wet.
Continue to fold the eggs gently for another 30-60 seconds until they are cooked through but still moist, then remove from heat.
Prepare your brewed coffee and stir in the collagen peptides until they are completely dissolved and the coffee is smooth.
Serve the warm scrambled eggs on a plate immediately alongside the hot collagen coffee.