01 - Heat Blackstone griddle or large cast iron skillet over medium-high heat. Lightly oil the cooking surface.
02 - Divide ground beef into 8 equal portions, approximately 2 ounces each. Shape into loose balls.
03 - Coat each beef ball evenly with salt, black pepper, smoked paprika, and garlic powder.
04 - Place tortilla on hot griddle. Mound shredded cheddar and Monterey Jack cheese blend in center of tortilla.
05 - Position seasoned beef ball atop cheese mound. Press firmly with spatula or burger press to flatten beef thinly across cheese and tortilla.
06 - Cook for 2-3 minutes until beef develops crispy edges and cheese melts to golden, bubbling consistency.
07 - Quickly flip entire assembly. Cook tortilla side for 1-2 minutes until crisp and lightly browned.
08 - Transfer tacos to serving platter. Top with lettuce, tomatoes, red onion, jalapeño slices, cilantro, and sour cream.
09 - Serve tacos hot while cheese remains melted and tortilla stays crispy.