In a large skillet, brown ground beef over medium heat, breaking it up with a fork, until cooked through and no longer pink.
Drain meat and stir in chili powder. Set aside to cool.
In a medium bowl, mash together the avocados. Stir in lime juice.
In the bottom of an individual glass (or plastic cup or small glass bowl), spread a layer of mashed avocado. Spoon a layer of cooked ground beef over that, followed by a layer of cheese, a layer of salsa, and a layer of shredded lettuce.
Top with a dollop of sour cream and a sprinkling of olives.
Repeat until all six cups are full. Serve with tortilla chips of your choice.