Mix the chopped red onion and tomato in a bowl and set aside.
Preheat grill to medium heat. Cook hot dogs for 7-10 minutes, turning until grill marks are noticeable and they start to expand.
Place one hot dog in each lettuce leaf.
Add a bacon strip alongside each hot dog.
Top the hot dogs with the onion and tomato mixture. If desired, drizzle on a splash of jalapeno sauce or mayonnaise and add a few jalapeno slices to each hot dog.