In a small bowl, whisk together the Greek yogurt, yellow mustard, pickle juice, and smoked paprika until smooth to create the special sauce.
Heat a large non-stick 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, and garlic powder.
Cook the beef for 7-10 minutes, stirring occasionally, until it is thoroughly browned and slightly crispy on the edges.
Prepare the base of the bowl by placing the chopped romaine lettuce in a large serving dish.
Top the lettuce with the cooked crispy beef, halved cherry tomatoes, diced red onion, chopped pickles, and sliced avocado.
Drizzle the special sauce generously over the bowl and serve immediately.