Kim Zolciak’s 15-year-old son, Kroy “KJ” Biermann Jr., filed a legal petition to be released on bond while awaiting court proceedings following his arrest for sexual assault. KJ’s attorneys requested the teenager’s release on Wednesday, September 2, according to court documents obtained by Us. Per the docs, KJ’s legal team claimed that their client is not a flight risk and cited his academic and athlete record as evidence of his good character. (TMZ was first to report the news.) The lawyers further noted that KJ has strong ties to the local community, including his parents and his siblings. (Zolciak, 48, and estranged husband Kroy…