Macos – How to always open certain app links in Chrome without prompt

Choosy does exactly this (among other things).

Forget the default browser, Choosy opens links in the right browser. When you click on a link Choosy will do the right thing, whether that's something simple (like using whatever browser is already running) or something complex (like prompting you to pick a browser, but only when you hold down the shift key and click on a link to google.com).

There is an extension called OpenHere that will do this. It will add the option in the right click context menu Open in This Window. Just right clcik on the link you want to open in the same tab.

Edit in response to comment:

You can do it with AutoHotkey. You have need to download it and install it on your PC. After that just copy the code below and save it with a .ahk extension.

SetTitleMatchMode, RegEx
#IfWinActive, - Google Chrome$
!RButton::  
    !LButton::  
        KeyWait, Alt  
        Click, Right  
        SendInput, e  
        ControlFocus, Chrome_OmniboxView1  
        SendInput, ^a{Backspace}  
        SendInput, ^v{Enter}   
        return
#IfWinActive

Now when you press Alt + LClick, it will copy the link to the clipboard and past it in the address bar of Chrome. Just press the button and click and release with the click and the link will open in the same tab.