In a small mixing bowl, whisk together the Greek yogurt, yellow mustard, smoked paprika, and pickle juice until the sauce is smooth and well combined.
Heat the olive oil in a medium skillet over medium-high heat.
Add the ground beef to the skillet and season with sea salt, black pepper, and garlic powder.
Cook the beef, breaking it into small crumbles with a wooden spoon, until it is fully browned and cooked through.
Prepare the base of the bowl by placing the shredded romaine lettuce in a large serving dish.
Layer the cooked ground beef, diced red onion, and sliced dill pickles over the lettuce.
Drizzle the yogurt-based special sauce generously over the top of the bowl.
Garnish with sesame seeds and serve immediately while the beef is still warm.