Heat the avocado oil in a large skillet over medium-high heat.
Add the ground beef to the skillet, breaking it apart with a spatula.
Season the beef with sea salt, black pepper, and garlic powder.
Cook until the beef is browned and cooked through, approximately 7-8 minutes.
While the beef cooks, chop the romaine lettuce, cherry tomatoes, red onion, cucumber, and dill pickles.
Arrange the romaine lettuce in a large bowl and top with the chopped vegetables and pickles.
Spoon the warm, seasoned ground beef over the salad base.
Drizzle the yellow mustard over the top before serving.