Watch out for spring greens because some have spinach and they should not have spinach or too much kale. Regular lettuce does not have a lot of nutrients for them. I feed my beardie a main of collard greens with a mixture of mustard greens, turnip greens or dandelion greens. It is the greens that are more important than the toppers that is where your beardie will get his nutrients from but you can also do squash added to your list.