In a small bowl, whisk together the Greek yogurt, yellow mustard, pickle juice, garlic powder, and smoked paprika until smooth to create the special sauce.
Heat the olive oil in a skillet over medium-high heat.
Add the ground beef to the skillet, seasoning with sea salt and black pepper.
Cook the beef, breaking it up with a spatula, until it is fully browned and cooked through, then remove from heat.
Finely shred the iceberg lettuce and finely dice the red onion and dill pickles.
Assemble the bowl by placing the shredded lettuce at the base, followed by the cooked ground beef, diced onions, and pickles.
Drizzle the special sauce over the top and garnish with sesame seeds before serving.