https://www.youtube.com/watch?v=QcBo8qOO78U&feature
Iguanas are herbivores. Iguana eating fruits, vegetables, and certain plant products. This needs to be known by a prospective owner iguana.
Because iguanas eat the plants, does not mean all kinds of herbs and fruits suitable for them.
There is a type of food that should be given on a regular basis, there is only given occasionally, and some are never given to iguana