One social media user posted an image of his breakfast to Facebook group Vegan Food UK, describing it as 'small' and 'disappointing'.
They pointed out that the meal contains just two vegan sausages, a single mushroom, half a tomato, two hash brown, and toast 'covering half the plate'.
Many of the comments agreed with the original post, saying the breakfast was lackluster, with one saying: "It's awful. I would have sent it back but was hungry....It is very dry. Shame on you Wetherspoons. Get some vegan spread and some vegan beans or some spinach or avocado or something to make this a nice breakfast. I would pay more if it was edible."
Another added: "One mushroom and HALF a tomato?? What are they saving the other half for?? Most places do double this AND you get two slices of toast, jam and hot drink in the side!"
Some Facebook users were more forgiving - saying they believed the breakfast is good value for the £3.25 price point.
No vegan beans
A common criticism of the meal is the lack of baked beans, which Wetherspoons addressed last year.
The chain uses Heinz's No Added Sugar Beanz, which contain an unspecified ingredient that is derived from animals.
Wetherspoons' vegan breakfast
"This is the vegan breakfast specification (it comes with two vegan spread in packs on the side but that has been put on the toast in the picture)," a spokesperson for Wetherspoon said in a statement.
"It’s £3.25 in most pubs. We use the no added sugar baked beans and have been in conversation with Heinz to make them vegan.
"Yes, we could do the regular beans but that adds a lot of calories and we serve over 350,000 non-vegan breakfasts each week with the beans. We believe it is a good breakfast for the price, but always happy to listen to feedback."