Dice the Russet potato into half-inch cubes and toss them in a bowl with the olive oil, half of the sea salt, and half of the garlic powder.
Place the potatoes in an air fryer basket and cook at 400°F for 15 to 20 minutes, shaking halfway through, until they are golden brown and crispy.
While the potatoes roast, add the ground beef to a skillet over medium-high heat, breaking it apart with a spatula until fully browned and cooked through.
Season the beef with the remaining sea salt, garlic powder, and the black pepper, then remove from heat.
In a small mixing bowl, whisk together the Greek yogurt, yellow mustard, pickle juice, and smoked paprika to create the clean special sauce.
Assemble the bowl by placing the crispy potatoes at the base, followed by the seasoned ground beef and shredded romaine lettuce.
Top with finely diced white onion and chopped dill pickles, then drizzle the yogurt sauce generously over the entire bowl.