In a small mixing bowl, whisk together the plain Greek yogurt, yellow mustard, pickle juice, smoked paprika, and garlic powder until smooth to create the special sauce.
Heat the extra virgin olive oil in a medium skillet over medium-high heat.
Add the ground beef to the skillet, seasoning with sea salt and black pepper.
Cook the beef for 5-7 minutes, breaking it into small crumbles with a wooden spoon, until browned and cooked through.
While the beef cooks, finely shred the romaine lettuce and finely dice the white onion and dill pickles.
Grate the sharp cheddar cheese if not already shredded.
Assemble the bowl by placing the shredded romaine lettuce at the bottom of a large bowl.
Layer the cooked ground beef, diced onions, pickles, and shredded cheddar cheese over the lettuce.
Drizzle the prepared Greek yogurt special sauce generously over the top of the ingredients.
Finish the bowl by sprinkling with sesame seeds for added texture and flavor.