Heat vegetable oil in a large fry pan. Add onion and ground beef. Cook until lightly brown, about 4 to 5 minutes. Add garlic and continue to cook for another 30 seconds. Turn off stove. Transfer to slow cooker insert.

Pour undrained tomatoes and tomato sauce over the beef. Add ground cumin, chipotle pepper, brown sugar, baking chocolate, salt, and pepper. Cover and cook on high for 4 hours.

Cook hot dogs in boiling water over medium heat for about 5 minutes. Remove with tongs.

To serve, place hot dogs in buns. Top with chili, shredded cheese, and chopped onions. Open corn chip packets and spoon in 1 to 2 tablespoons of chili. Top with shredded cheese.