Place tortilla chips on a flat baking sheet in a single layer and drizzle vegan queso across the top.
Place in an oven on broil for approximately 3-5 minutes, only until some chips have started lightly browning and cheese sauce is hot.
Meanwhile, prep toppings. Peel and finely chop the red onion. Cut and remove seeds and juice from center of tomatoes and chop. Slice jalapeno into circles. Slice black olives into circles. Chop cilantro. Cut, discard pit and remove avocado flesh. Cut lime in half, slicing one half for garnish and juicing the other half.
Make simple guacamole by mixing the avacado, salt, the juiced half of one lime, half of the cilantro, and approximately 1/3 of the available chopped onion.
When chips have warmed, split onto plates and prepare nachos. Place all toppings on top with guacamole and cilantro to finish. Serve with lime slices and any other preferred toppings (e.g. salsa, vegan sour cream, radish slices, etc).
Enjoy!