Paper from my already published PhD thesis -- How do I cite it? Two years ago I finished my thesis, at the time I wasn't interested in writing papers but I have since changed my mind.
The thesis has been made available online by the department. It has been cited by someone else since that time.

I would like to take a chapter of my thesis and publish it as a journal paper. And based on this question here, it seems that could work:

Can I publish parts of the Ph.D thesis as a paper in a journal?

However, I have a follow-on question. Should I be citing my own thesis if I write a paper from one of the chapters?
Notes:


I would not be adding any extra analysis
I will be using the same figures


Extra for experts: Should I be paraphrasing all or most of the text? At the moment I have paraphrased most but perhaps one or two sentences remain unchanged because I considered them to be in the most clear and succinct form I could manage for an explanation.
Yes, you can publish a chapter of your thesis as a journal paper. The two-year time lag is slightly unusual, but it's not a show-stopper. However, since the thesis has been cited already, it is possible that someone else may publish a work that extends the results of the chapter you intend to publish, which might lead to rejection. You should be prepared for that. 

I would also cite the thesis, in the introduction or perhaps in an acknowledgment section (depending on the intended journal; have a look through the archives to see common practices). "Some/The majority/Most of the materials contained in this paper were previously published (in modified form) in my thesis ...".