Separate the crescent pastry and lay out in a circle, pointed ends out on a foil lined pizza pan, sprayed very lightly with cooking spray. Use some of the leftover crescent rolls to to make the center a bit thicker as this will hold the meat.
Brown meat in a frying pan until no longer pink. Drain fat and add taco seasoning as directed on package, reducing the water to a scant 1/3 cup from the 1/2 cup called for. Drain excess liquid from meat.
Sprinkle meat mixture in a circle inside the crescent rolls, then sprinkle 1 cup of the cheese over the meat. Pull crescent roll points over meat and cheese and tuck in.
Bake at 350 degrees until pastry is golden brown.
Add remaining 1/2 cup of cheese, chopped lettuce, tomato, black olives, and jalapenos (if using), into the middle of the ring, then add a few dollops of sour cream if desired, before serving.