In a large skillet over medium-high heat, heat 1 tablespoon oil. Add the onion and cook until soft, about 5 minutes. Add the garlic and cook for 30 seconds. Add the ground beef and cook until fully browned. Drain any fat from the pan. Add the tomato paste and cook for 2 minutes, stirring. Add the salt, pepper, chili powder, and ground cumin and cook for 1 minute, stirring. Add the canned tomatoes (with the juices), chilies, and olives. Cook, stirring occasionally, until heated through and the mixture thickens, about 10 minutes. Put mixture into a 9 by 12 inch baking dish (or if using a cast iron skillet, leave in the pan).