I would reiterate what others have said here.
o Strongly consider not providing breakfast.
o If you decide to provide breakfast, consider:
-- Asking ahead of time about vegetarian, allergies and food sensitivities, and provide sample menu of what you provide
-- Charging extra after 1st guest
-- Charging separately for breakfast
o Check local laws on whether you're permitted to offer foods without health/safety inspections. In general, what you're doing would be illegal activity in many if not most U.S. states or counties.
o Check with your insurer on whether they would insure you for incidents arising out of this
o If providing those breakfasts is illegal, I wonder whether you would be covered by AirCover for claims arising out of illegal activity by the Host.
I know it sounds 'nefarious' to use the phrase 'illegal activity' but it just might be. If a claim arises you'll be called worse. If it's illegal and the guest raises that with Airbnb expect for your listing to be suspended or worse.
I understand that you're just trying to be a wonderful Host but I urge you to do your homework before continuing to provide or even offer breakfasts or any food. [Here exceptions sometimes apply to shelf-stable pre-packaged foods.]