Set ridged grill pan over medium heat until hot. Place hot dogs on hot grill pan, cook for 7 to 9 minutes, or until heated through. We usually skip this step and just boil the hot dogs like the package instructs, or you could microwave them!
Meanwhile, in a 10-inch skillet, heat oil over medium-high heat until hot. Add beef and chili powder. Cook, stirring and breaking up beef with side of spoon, for 3 to 4 minutes or until beef looses its pink color throughout. Stir in salsa. Cook for 1 minute longer or until heated through. If using all-ready made chili like from the grocery store, we just add salsa on top of the chili.
Place hot dogs in buns; top evenly with beef mixture. Top each hot dog with 3 tablespoons cheddar, 3 tablespoons tortilla chips, and a few pinches of lettuce. Serve immediately.