murben what there is is the Food Service > Transactions program.
And the "Lunch Payment" in the Student Billing > Payments program.
(this will not automatically increase the lunch account balance)
The Student Billing and the Food Service modules are independent and can be used one without the other.
But of course, that could be improved and we could imagine that checking the "Lunch Payment" checkbox would automatically create a deposit in the Food Service account.
Please let me know if you are interested in a similar solution and would like to sponsor its development.