Preheat the oven to 425 degrees F. Roll out the pizza dough and fit it onto a 15-inch pizza pan.
Brown the ground beef in a medium skillet over medium heat, about 10 minutes. Stir in the taco seasoning. Set aside.
In a medium bowl, mix together the refried beans and picante sauce until combined. Spread the mixture onto the crust. Scatter the olives over the crust, then top with the cheese and the browned beef. Bake for 20 minutes, or until the crust is lightly browned.
While the crust is baking, lightly salt the tomatoes, then, in a medium bowl, toss them with the lettuce and sour cream. Once the pizza is out of the oven, top it with the cool lettuce mixture. Slice into eight pieces and serve.
Garth likes extra-mild picante sauce. I'd use medium to hot.