Consider using sliced cucumber for scooping up delicious, healthy guacamole instead of chips. If you do stick with corn chips, buy a version free from trans fats, found in partially hydrogenated oils. It’s these, even more than the fried carbs, that are giving you that spare tire. Your body, as the kids used to say, literally cannot even with trans fats.
Or better yet, fry your own chips in saturated fats, which get an unfair rap. While you want to limit your daily intake, saturated fats are healthier for cooking at high heat (exception: palm oil -- don’t use it) thanks to a higher smoke point and less oxidization. A stack of taco tortillas costs next to nothing at the supermarket, and fry up fast and easy -- just quarter them in a stack; two cuts with a chef’s knife and you’re ready to fry. After draining, toss with a light amount of salt and any other seasonings you want. You can halve the amount of sodium even as you use that much more beneficial oil above. So you’re the rad guest who showed up with twice as many chips for a quarter of the price, that are healthier and more delicious? Grand slam.
Note: When shopping for a good saturated fat, pick your lard or coconut oil carefully. Many brands are partially hydrogenated.