01 - Whisk together mayonnaise, ketchup, mustard, chopped pickles, garlic powder, onion powder, smoked paprika, salt, and pepper in a small bowl until fully incorporated. Set aside to allow flavors to meld.
02 - Divide ground beef into 8 equal portions, approximately 2 oz each. Gently shape into loose balls without overworking the meat. Season lightly with salt and pepper on all sides.
03 - Place a large cast iron skillet or griddle over medium-high heat and allow it to become thoroughly hot, approximately 3-5 minutes. The surface should be smoking slightly before adding beef.
04 - Place 2-3 beef balls on the hot skillet. Immediately top each with a tortilla and press down firmly with a sturdy spatula or burger press, flattening the beef to the edges of the tortilla. Cook for 2-3 minutes until deeply browned and crispy.
05 - Carefully flip each assembly so the tortilla contacts the skillet directly. Place a cheese slice on each patty and continue cooking for 1-2 minutes until the tortilla is golden brown and cheese is completely melted.
06 - Transfer cooked tacos to a platter and repeat the cooking process with remaining beef balls and tortillas. Work in batches to avoid overcrowding the cooking surface.
07 - Top each smash burger taco with shredded lettuce, diced tomatoes, sliced red onion, and pickle chips. Drizzle generously with the prepared sauce. Serve immediately while hot and crispy.