1Brown the ground beef in a large skillet over medium-high heat, breaking apart into small crumbles with a wooden spoon, until fully cooked and no pink remains, about 8-10 minutes.
2Drain the excess fat from the skillet thoroughly, leaving just the cooked beef.
3Stir in the taco seasoning packet along with 3 tablespoons of water. Simmer for 2-3 minutes until the liquid absorbs and the beef becomes well-coated, then remove from heat.
4Warm the nacho cheese sauce in a microwave-safe bowl for 45-60 seconds, stirring halfway through, until smooth and pourable.
5Arrange the tortilla chips in a single layer on a large serving platter or rimmed baking sheet, overlapping slightly but ensuring good coverage.
6Drizzle the warmed nacho cheese sauce generously over the chips in a back-and-forth motion, covering most surfaces.
7Distribute the seasoned ground beef evenly across the cheese-covered chips, focusing on center areas for best structural support.
8Sprinkle the shredded cheddar cheese over the beef and chips.
9Optional: Place under a preheated broiler for 2-3 minutes until the cheddar melts and edges begin to bubble, watching carefully to prevent burning.
10Remove from heat and immediately top with dollops of sour cream distributed across the nachos.
11Scatter the diced tomatoes, jalapeño slices, black olive slices, minced red onion, and fresh cilantro evenly over the entire dish.
12Serve immediately while chips remain crispy and cheese stays melted.