Scrub and peel the potato, then grate it using the large holes of a box grater.
Place the shredded potato in a clean kitchen towel and squeeze out as much moisture as possible to ensure maximum crispiness.
In a medium bowl, whisk the egg and then stir in the dried potato, almond flour, sea salt, black pepper, and onion powder until well combined.
Heat the avocado oil in a large non-stick skillet over medium-high heat.
Scoop the potato mixture into the skillet to form two large or four small patties, pressing down firmly with a spatula to flatten.
Cook for 4-5 minutes per side until the exterior is golden brown and the edges are perfectly crispy.
Transfer the latkes to a plate and top evenly with the smoked salmon and a generous dollop of Greek yogurt.
Garnish with finely chopped fresh chives and serve immediately while hot.