There is no scientific evidence to suggest that Lipitor, a medication used to treat high cholesterol, directly affects a person's desire for breakfast. Lipitor is a statin, a type of drug that works by reducing the amount of cholesterol your body absorbs [1]. It does not interact with the body's hunger or appetite mechanisms. Any changes in appetite or eating habits while taking Lipitor are likely to be unrelated to the drug itself. However, it is always advisable to consult with a healthcare provider if you notice any changes in your appetite or eating habits while taking any medication.

Sources:
[1] DrugPatentWatch.com, "Lipitor (Atorvastatin) - Drug Patent Expiration & FDA Approval Dates", <https://www.drugpatentwatch.com/drugs/lipitor>