Any regulations or restrictions herein contained and the Zoning Map forming a part of this chapter, and the boundaries of any district shown thereon, may, from time to time, be amended, supplemented, changed, modified or repealed by the Town Board of the Town of Salina, upon its own motion or upon petition and after public hearing. Any person owning real property within the Town of Salina and outside of any incorporated village therein may petition the Town Board of the Town of Salina for a change of zone of his said land, or any part thereof, and may be heard at a public hearing in favor of or in opposition to any change of zone. The Town Board may decline to call a public hearing in any case where the Town Planning Board recommends denial of the zone change petition.