Is it these you mean?
https://hungryjacks.com.au/menu/sides/chips-large
Seasoned Salt: (Salt 70%), Maltodextrin (Corn), Flavour (Thermal), Rice Flour, Vegetable Powders (Onion, Garlic), Yeast Extract
http://www.foodprocessing.com.au/content/training-education/article/flavour-definitions-and-classifications-1166826690
3.3.6 Thermal process flavouring
A thermal process flavouring (IOFI Guideline chapter 14.3) is a product prepared for its flavouring properties by heating raw materials that are foodstuffs or constituents of foodstuffs. This process is analogous to the traditional home cooking of ingredients of plant and animal origin.
Maltodextrin is also something to avoid -
http://fitnessfortravel.com/is-maltodextrin-bad-for-you/
Though not a sugar, it still has a glycemic index of 130 by itself (table sugar is only 65).
Easily absorbed carbs like maltodextrin and sugar get into your bloodstream fast. If there is nothing for all that blood sugar to do (i.e. repair muscle-tissue, give energy), it will get stored as fat. Contrast that with real complex carbs from whole grains, which are broken down and absorbed slowly, and maltodextrin looks more and more like sugar.