01 - Heat a large skillet over medium-high heat. Add the ground beef and break it apart with a wooden spoon. Season with salt, black pepper, garlic powder, and onion powder. Cook for 8 to 10 minutes, stirring occasionally, until the beef is fully browned and no pink remains. Drain excess fat if necessary.
02 - While the beef cooks, chop the romaine lettuce, dice the tomatoes, thinly slice the red onion, chop the dill pickle, and slice the avocado. Set each aside separately for assembly.
03 - Divide the chopped romaine lettuce evenly among four serving bowls, creating a fresh bed of greens in each.
04 - Spoon the hot seasoned ground beef over the lettuce in each bowl, dividing it evenly among the four servings.
05 - Top each bowl with the diced tomatoes, sliced red onion, chopped pickle, sliced avocado, and shredded cheddar cheese, distributing everything evenly.
06 - Finish each bowl with a drizzle of burger sauce or mayonnaise, ketchup if using, and yellow mustard to taste.
07 - Sprinkle with sesame seeds and fresh chives if desired. Serve immediately while the beef is still warm.