Bake your fries according to the package directions. Once done, leave the oven on and let the fries cool just enough so that you can touch them.
Line 1/3 of the fries on the baking sheet and top them with about 1/3 of the cheese, onion, black beans, and tomato. Repeat with the next 1/3 of the fries and then the final 1/3 of the fries.
Top with the jalapenos and any additional cheese.
Bake for about 5 minutes or until the cheese is fully melted.
While the nachos are baking, mix together the sour cream and sriracha and set aside.
Once the fries are slightly cooled, top with the sour cream/ sriracha mixture, avocado, and green onion.