Kim Zolciak’s 15-year-old son, Kroy “KJ” Biermann Jr., is asking to be transferred to juvenile court after being indicted on seven felony charges in his sexual assault case, Page Six can exclusively reveal. The teen’s legal team filed a motion to “transfer to juvenile court and for confidentiality proceedings” on Tuesday, according to the Fulton County Court. The move signals that KJ’s attorneys are asking the Superior Court to transfer his case to Georgia’s juvenile justice system, where he would no longer be prosecuted as an adult and could face less severe consequences if convicted. KJ’s lawyer, Jason Sheffield, told Page Six Tuesday…