Heat the olive oil in a large skillet over medium-high heat.
Add the ground beef to the skillet, breaking it into small crumbles with a spatula.
Season the beef with sea salt, black pepper, garlic powder, and onion powder.
Cook the beef undisturbed for 3-4 minutes to develop a crust, then stir and continue cooking until deeply browned and crispy.
In a small mixing bowl, whisk together the Greek yogurt, yellow mustard, smoked paprika, and apple cider vinegar until smooth.
Finely shred the romaine lettuce and dice the red onion and dill pickles.
Place the shredded lettuce in a large bowl and top with the crispy ground beef, diced onions, and pickles.
Drizzle the special sauce over the bowl and garnish with sesame seeds before serving.