George Zimmerman's television interview in which he said had few regrets about the night he killed teenager Trayvon Martin has been entered as possible evidence in his upcoming murder trial.

In a wide ranging interview with Fox News' Sean Hannity Zimmerman, appearing articulate and calm, said he neither regretted carrying a gun that night nor pursuing the 17-year-old Martin.

"I feel that it was all God's plan," he told Hannity. When asked if there was "anything you might do differently," Zimmerman responded, "No Sir."

Granting the interview will likely haunt Zimmerman, veteran legal analyst and defense attorney Mark Eiglarsh told ABC News. "He has impeached himself publicly, this is going to be a huge problem for him… and the prosecutors must be extremely pleased... He was making inconsistent statements that they can use in a trial against him."

And some are now questioning whether Zimmerman has begun disregarding his attorney's advice.

After his interview with Hannity Thursday, Zimmerman abruptly cancelled an interview with ABC News' Barbara Walters, which his attorney Mark O'Mara had set up.

Walters said on "The View" today that she arrived to do the interview Wednesday and found a "stubborn" Zimmerman dressed in a T-shirt and demanding certain conditions from her that she was unwilling to agree to. Walters would not specify what Zimmerman asked for in exchange for the interview, but said that she would never agree to it.