In a medium bowl, combine the flaked cooked salmon, egg, almond flour, finely chopped scallions, diced celery, sea salt, black pepper, and garlic powder.
Mix the ingredients thoroughly until the mixture is well combined and holds its shape when pressed together.
Form the salmon mixture into two or three even-sized patties, pressing firmly to ensure they remain intact during cooking.
Heat the olive oil in a non-stick skillet over medium-high heat until shimmering.
Carefully place the patties in the skillet and sear for 3 to 4 minutes per side until they are golden brown and develop a crispy exterior.
While the patties are searing, whisk together the Greek yogurt, chopped fresh dill, and lemon juice in a small bowl to create the sauce.
Serve the hot salmon patties immediately, topped with a generous dollop of the creamy dill sauce.