In a large nonstick skillet, heat oil over medium-high heat. Add onion, bell pepper, jalapeno, garlic and corn. Cook for 4 to 5 minutes, or until onion is tender, stirring occasionally.
Stir in ground meat, chili powder, cumin, and oregano. Cook for 5 to 6 minutes more, or until meat is no longer pink. Stir in ketchup, Worcestershire sauce and cilantro; heat through.
Divide mixture among rolls. If desired, top with pickle slices.