How to prevent chapter titles from appearing in the header on the first page of each chapter in ConTeXt?

To place the chapter title in the header of my document, I used:

 \setupheadertexts[{\getmarking[chapter]}][][][{\getmarking[chapter]}]


My document is not double-sided. Whenever the chapter title appears on the first page of the chapter, it produces the odd result of seeing the chapter title in the header directly above the actual chapter title, e.g.:

 _______________
| Chapter 1     |
|               |
| CHAPTER 1     |
|    Once upon  |
| a time, ...   |
|_______________|


How can I place a chapter title in the header, but prevent it from appearing on the first page of each chapter?

Use the header key to control the header of a chapter page, empty suppresses the header on a chapter page.

\setuphead
[chapter]

Side note: You don't need to write \getmarking[chapter] simply chapter will do just fine.
\setupheadertexts