Split the whole-wheat English muffin and toast until golden brown and crisp.
In a medium skillet over medium-high heat, lightly sear the Canadian bacon slices for 1-2 minutes per side until warmed through and slightly caramelized.
Fill a deep saucepan with water and add the white vinegar, bringing it to a gentle simmer.
Crack each egg into a small ramekin, create a gentle whirlpool in the simmering water, and carefully drop the eggs in to poach for 3 minutes until the whites are set but yolks remain runny.
While eggs poach, whisk together the melted ghee, Greek yogurt, lemon juice, Dijon mustard, sea salt, black pepper, and cayenne pepper in a small bowl until the sauce is smooth and emulsified.
Place the toasted muffin halves on a plate and top each with two ounces of the seared Canadian bacon.
Use a slotted spoon to carefully remove the poached eggs from the water, dabbing them on a paper towel to remove excess moisture, and place them on top of the bacon.
Generously drizzle the zesty yogurt-based hollandaise over the eggs and garnish with freshly chopped chives before serving immediately.