Heat a skillet with oil. Add the onion, saute for a minute or until tender.
Add the ground beef, cook for 5-8 minutes or until browned. To keep the beef nicely browned, drain the excess water. Add the homemade taco seasoning, stir until well combined.
Add jalapeno pepper, diced tomatoes, and squeeze lime juice, keep stirring until well combined. Remove from the pan and set aside.
Preheat the oven to 400ºF. Assemble the nachos. Line corn chips in a 9-inch casserole dish. Top with the meat mixture, cheese, green onion, bacon, and cilantro.
Repeat the process. Layer another corn chips, add the toppings.
Bake for 5-8 minutes or until the cheese melts. Sprinkle cilantro, shredded lettuce, and green onions, serve warm. Option: top with mashed avocado and sour cream
Notes
If you don't have time to cook the bacon, use bacon bits.