2.5 weeks post op breast reduction, spot at the t-zone isn't healing, it's very uncomfortable and sore. (photo)

I'm sorry to hear about your concerns after breast reduction surgery; although understandably distressing to patients, these types of  wound healing problems tend to heal over the course of several weeks. Sometimes, the area may look worse before it looks better.  
These wounds go on to heal through a process of contraction where the tissues heal from the sides towards the center of the wound; occasionally, removal of unhealthy tissue (debridement) and/or removal of exposed sutures, may expedite the healing process. Close followup with your plastic surgeon will be important; treatment regimens will vary from one practice to another.  Close attention to good nutrition, including a good protein source, is important. Obviously, avoidance of any type of nicotine product is also important.
 
Best wishes; despite the incision line healing problem it is most likely that you will be pleased with the longer-term outcome of the procedure. Sometimes, depending on the appearance of the area, scar revision surgery may be helpful.

The T junction is a common site of delayed wound healing.  This area is the site of most tension after a breast reduction.  The photos look fine and this will heal without any problems.  

Hi jsmittyj, sorry you are having a problem in this area. Please be reassured that breakdown at the T-junction is fairly common following breast reduction - it is where the greatest tension exists at the closure. It will slowly heal over a period of a few days-weeks. It may get worse before it gets better, but be reassured that it will heal.
Good luck!