I looked at the menu .. I didn't see egg Foo young as a side order .. Can I just order egg Foo young?

You can order Egg Foo Young. It is on the menu and it comes with either steamed white rice or pork fried rice. It comes as a full order of three but you can also order just one at a time.

I know you used to

I don't know. I went in with a specific dish in mind to order, so I didn't look at the entire menu. Give them a call and ask.