Sec. 909. (a) A member of a board of zoning appeals is disqualified and may not participate in a hearing or decision of that board concerning a zoning matter if the member:
(1) is biased or prejudiced or otherwise unable to be impartial; or
(2) has a direct or indirect financial interest in the outcome of the hearing or the decision.
(b) The board shall enter in the board's records:
(1) the fact that a regular member has such a disqualification; and
(2) the name of the alternate member, if any, who participates in the hearing or decision in place of the regular member.