Preheat your oven to 350°F (175°C).
In a skillet over medium heat, cook the ground beef until browned, about 5-7 minutes. Drain excess fat and stir in taco seasoning. Cook for an additional 2 minutes, then remove from heat.
On a large baking sheet, spread out the tortilla chips in an even layer.
Evenly distribute the seasoned ground beef over the chips, followed by the black beans and corn.
Sprinkle both cheeses generously over the top, ensuring even coverage.
Bake in the preheated oven for 10-12 minutes, or until the cheese is melted and bubbly.
Remove from the oven and top with diced tomatoes, black olives, green onions, and jalapeños if using.
Serve immediately with sour cream, guacamole, and cilantro on the side for drizzling or dipping.