01 - Preheat your oven to 400°F.
02 - In a skillet over medium heat, add olive oil and ground beef. Cook for 5–7 minutes, breaking up the meat, until browned.
03 - Stir in cumin, chili powder, paprika, garlic powder, onion powder, salt, and pepper. Cook for 1–2 minutes until fragrant. Remove from heat.
04 - On a large oven-safe platter or baking sheet, evenly spread out the tortilla chips.
05 - Top chips with the cooked beef, then sprinkle both cheeses evenly over the top.
06 - Bake for 7–10 minutes until the cheese is melted and bubbly.
07 - Remove from the oven. Scatter tomato, red onion, jalapeño (if using), black olives, cilantro, and avocado over the hot nachos.
08 - Finish with dollops of sour cream. Serve immediately.