Bring a large pot of lightly salted water to a boil. Add pasta and cook for 8 to 10 minutes or until al dente; drain.
While pasta is cooking, heat olive oil over medium heat in a large skillet. Cook onions and pepper in oil until lightly browned, 10 minutes. Stir in corn and heat through. Stir in black beans, tomatoes, salsa, olives, taco seasoning and salt and pepper and cook until thoroughly heated, 5 minutes.