In a large skillet over medium heat, brown beef. Add taco seasoning, salsa and jalapeno juice. Add a little water if mixture is too dry. Reduce heat to low and simmer for 10 minutes.
In another large skillet, heat oil over medium-high heat. Fry each tortilla flat until crispy on both sides. Place tortillas on individual ovenproof plates (or cookie sheets and then transfer them later onto plates). Cover each tortilla with meat mixture, then spread cheese over top.
Broil 6 inches from heat until cheese melts, about 2 minutes. Remove plates and top cheese with shredded lettuce, tomatoes and olives. Place dollops of guacamole and sour cream in centers of chalupas. Enjoy!