Your cat sounds like a hater, but it is important to respect the feelings of family, even when it’s hard for us to understand their reasoning. Have you asked him about his irrational hatred of chips? Maybe it stems from a traumatizing incident with chips, or maybe he was a fitness expert in a past life. Or perhaps he just doesn’t like to see you happy. Or he wants chips himself. I dunno. I’ve never had a cat. They make my eyes swell shut.