Seed oils are part of the problem. I am pointing to seed oils because this us exactly what is used by commercial chip manufacturing.

However, the response to the potato chips at the hormonal level is dealing with the carbs, not the fats…ergo insulin response. You don’t believe me, test your blood sugars after you eat those chips, guaranteed your blood sugars will spike.

Why? Rapidly converted simple carbs that are absorbed in the duodenum. The digestion of those carbs starts in the mouth.

That is the first part of your small intestine.

However, it’s not just chips. Low fat foods, like one percent milk and yogurt are far less satiating than oh full fat milk, ergo you tend to consume more

Here, from Harvard. There is quite a bit of this in the medical research lit, but this is more digestible for most people.

https://www.hsph.harvard.edu/news/hsph-in-the-news/have-low-fat-diets-made-us-fatter/