Heat a large skillet over medium-high heat. Cook and stir ground beef in the hot skillet until browned and crumbly, 5 to 7 minutes. Drain and discard grease. Stir in chili beans, French-style dressing, and seasoning mix. Fill the empty dressing bottle ⅔ full of water and add to the skillet. Bring to a boil, reduce heat, and simmer for 15 minutes.
Crush the bag of chips, open the bag, and toss crushed chips into a large bowl.
Add cheese, and tomatoes. Pour meat mixture into the bowl; mix well.
Fill a bowl with lettuce. Top with meat mixture, salsa, and sour cream. Serve warm and enjoy!
