In a small mixing bowl, whisk together the Greek yogurt, yellow mustard, pickle juice, and smoked paprika until the sauce is smooth and combined.
Heat the avocado oil in a large skillet over medium-high heat until shimmering.
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 spatula, until it is thoroughly browned and develops a slightly crispy texture, about 7 to 8 minutes.
While the beef is searing, chop the romaine lettuce into bite-sized pieces and halve the cherry tomatoes.
Finely dice the red onion and the dill pickles.
Divide the chopped romaine lettuce between two bowls to create a fresh base.
Top the lettuce with the warm, crispy beef crumbles, followed by the tomatoes, red onion, and pickles.
Drizzle the zesty yogurt sauce generously over the bowls and serve immediately.