In a bowl, whisk together the sour cream and 1 packet of taco seasoning mix. Set aside.
Make guacamole or in a bowl, place peeled and seeded avocados and mash well. Add lime juice, kosher salt, and fresh black pepper to taste. Set aside
In a 9×13 or similar size serving dish, evenly spread beans on bottom. Continue layering in the following order: sour cream mixture, guacamole, diced tomatoes, and shredded cheese. Top evenly with a layer of green onions and sliced olives. Wrap tightly, keep chilled, and serve with hearty corn chips.