Popular "Pay as you feel" restaurant Lentil as Anything has become too popular with a particular class of clientele, and is making some changes for the comfort of its neighbours.

Maggie Maguire, chief executive of the Abbotsford Convent Foundation, said the convent's grounds were becoming overrun with patrons of the restaurant, some of whom "were literally treating it like their home".

Shanaka Fernando, founder of Melbourne restaurant chain Lentil as Anything where meals have no fixed prices and patrons pay what they think the meal is worth. Credit:Joseph Feil

"Lentil as Anything, like the convent, has become increasingly popular and their 'pay as you feel' mode meant that we were getting lots and lots and lots of people and a lot of those were starting to take over the site," she said.

The changes will include requiring patrons to "wear shoes at all times, refrain from consuming drugs or alcohol, camping, or basing themselves for unreasonable amounts of time in or near the convent," according to a statement released by the restaurant on Tuesday.