Prepare the Burger Patties:
Begin by dividing the ground beef into four equal portions. Shape each portion into patties approximately 4 inches in diameter and 1/2 inch thick. Season both sides of each patty with the burger seasoning, or the salt and pepper mix.
Cook the Burger Patties:
Heat a large, heavy-bottomed skillet over medium-high heat for about three minutes. Lightly coat the pan with avocado oil, then add the patties. Let them sear for 3 minutes, or until they develop a rich brown crust and can be easily flipped. Flip the patties carefully, and cook for an additional 3 minutes, allowing them to remain slightly pink in the center. If desired, test the internal temperature with a thermometer to ensure it reaches your preferred doneness. Once cooked, remove the patties from the pan and let them rest.
Prepare the Dressing:
While the patties cook, combine the mayonnaise, ketchup, mustard, pickle relish, garlic powder, onion powder, and ground black pepper in a small mixing bowl. Stir until the dressing is well-blended and smooth.
Assemble the Salad:
In four shallow bowls, evenly distribute the chopped lettuce, sliced onion, tomato pieces, pickle chips, and shredded cheddar cheese. Arrange the ingredients so that each bite includes a bit of everything. Place a burger patty on top of each salad and drizzle generously with the prepared dressing. Finish with a few cracks of black pepper and serve immediately for the best freshness and flavor.