Chrome: Disable Auto Sign-in to Twitter

How do you do this?

Preventing the dialog box from popping up.

“Sign in as”

Before you suggest an answer, check if the answer works for you.

I assume this is because you’ve signed into twitter from Chrome on a couple of accounts before and told it to remember your password…
Manage passwords - Computer - Google Chrome Help

You may have saved your credentials in Chrome. Check out this tutorial to remove them.