Heat oven to 400°F. Unroll cornbread twists into ungreased 15x10x1-inch baking pan; press together to form 15x6-inch rectangle. Prick dough with fork; sprinkle with chili powder. Bake at 400°F. for 5 minutes.
Meanwhile, in small bowl, combine taco sauce and cumin; mix well.
Remove partially baked crust from oven. Spread taco sauce mixture over crust. Sprinkle with olives, bell pepper, onion, chile and cheese.
Return to oven; bake an additional 8 to 12 minutes or until edges are golden brown and cheese is melted. Sprinkle with cilantro. Cut into squares.