1Preheat oven to 375. Coat a 13"x9"x2" baking pan with nonstick cooking spray.
2In a large skillet,heat oil over med-high heat.
add peppers,ground beef,garlic ans salt;cook, stirring to break up clumps of beef,until peppers are soft and beef is no longer pink;about 5 minutes.
drain off any fat from skillet
3Remove pizza dough from tubes.Cut the dough crosswise into 1/2" wide slices.,then cut each slice into quarters.
4In a large bowl,toss together dough pieces and salsa.
Add cooked meat mixture,2 cups of the taco-cheese blend and olives.Scrap mixture into baking dish.
Sprinkle the remaining 1 cup of taco cheese blend over the top.
5Bake at 375 for 30 minutes.
Sprinkle scallions evenly over top.
Bake an additional 5 minutes.