There is no direct evidence to suggest that Lipitor, a medication used to treat high cholesterol, influences a person's appetite for breakfast or any other meal. Lipitor, the brand name for atorvastatin, works by reducing the production of cholesterol in the body, which can help prevent heart disease and stroke [1].

Appetite is primarily influenced by a variety of factors including hunger, taste preferences, emotional state, and cultural influences [2]. While some medications can affect appetite as a side effect, there is no specific mention of Lipitor having an impact on appetite in the clinical trials or post-marketing surveillance studies [1].

It is always important to consult with a healthcare provider or pharmacist for personalized advice regarding medication use and potential side effects. They can provide guidance based on an individual's medical history and current health status.

Sources:
[1] DrugPatentWatch.com. (n.d.). Lipitor (Atorvastatin) - DrugPatentWatch. Retrieved from https://www.drugpatentwatch.com/drugs/lipitor
[2] Mayo Clinic. (2021, April 23). Appetite loss. Mayo Clinic. Retrieved from https://www.mayoclinic.org/diseases-conditions/appetite-loss/symptoms-causes/syc-20354914