01 -
Set oven to 350°F (180°C) and allow to fully preheat.
02 -
Warm oil in a skillet over medium heat. Add red onion and cook for 5 minutes until soft and translucent.
03 -
Add ground chicken to the skillet, breaking it apart, and cook for 8 to 10 minutes until browned and cooked through.
04 -
Incorporate fajita seasoning and stir well, sautéing for 1 minute. Remove from heat.
05 -
Evenly spread tortilla chips in a large oven-safe skillet or on a baking sheet.
06 -
Distribute the cooked chicken mixture evenly over the chips, then sprinkle with shredded cheddar cheese.
07 -
Place skillet or baking sheet in the oven and bake for about 10 minutes, or until cheese is fully melted and bubbling.
08 -
Remove nachos from the oven. Top with avocado, diced tomatoes, jalapeño slices, green onions, and cilantro.
09 -
Serve immediately with sour cream and salsa on the side.