Here are some interviews with Parker I have bookmarked over the last couple of years. Happy reading. But first - a quote from Parker himself:
"Without wishing to sound grand, at this point I have no idea how many interviews I have given; how many of them were published; what proportion were accurately transcribed; how many I regretted almost before they had begun."
Full interview is at Nate Wooley's Sound American website - be sure to check out the other interviews there too.
Complicated Sublimity - by Stewart Smith, The Quietus July 17 2013
The Jazz Breakfast - by Peter Bacon, November 9 2013
All About Jazz & Interview with Martin Davidson - March 2003 & April 1997 respectively. From Parker's website.
Paris Transatlantic - by Dan Warburton January 2010. There are plenty of interviews on this website.
The European Free Improvisation Pages have a couple (plus some articles etc).
May 1994 for ImprovJazz
April 1997 for Opporium by Martin Davidson
Interview by Richard Scott 1987
Intakt Records interview with Evan Parker & Barry Guy by Bill Shoemaker, August 2002
Shopping with Evan Parker - from January 2002
Point of Departure - Evan Parker on John Coltrane, August 2006
Chicago Reader: Making Music From Music - by Peter Margasak, September 2009
Interview with Simon Waldvogel - 2000
Conversation with Evan Parker & Thomas Struth - by Ted Panken February 2003