In a small bowl, combine mayonnaise, dill pickles, yellow mustard, white vinegar, paprika, garlic powder, and onion powder. Stir until smooth and season lightly with salt and pepper. Cover and refrigerate for at least 10–15 minutes to let flavors meld.

Heat olive oil in a skillet over medium-high heat. Add finely chopped onion and sauté until translucent, about 2–3 minutes.

Add the ground beef, breaking it up with a spatula. Season with salt and pepper and cook until no pink remains, about 6–8 minutes. Ensure the beef reaches an internal temperature of 160°F (71°C). Drain excess fat if necessary.

Warm tortillas in a dry skillet for 15–20 seconds per side or microwave covered for 15–20 seconds.

Lay each tortilla flat. Spread about 2–3 tablespoons of the special sauce down the center, add a quarter of the cooked beef, 1/4 cup shredded cheddar, shredded lettuce, and dill pickle slices if using.

Fold the bottom edge of the tortilla up over the filling, then fold both sides toward the center and roll tightly.

For a warm, sealed finish, toast the wrapped seam-side down in a skillet for 1–2 minutes until lightly browned and cheese melts. Serve immediately.