Following his discharge from the AIF, Pizzey returned to teaching, and by 1946 was involved in administration at the Queensland Board of Adult Education. He resigned from the Department of Public Instruction in 1949 and became involved in representing the interests of sugar cane farmers as manager of the Childers Cane Farmers' Co-Operative and secretary to the Isis District Cane Growers' Executive. This representative role encouraged Pizzey to run for parliament, and in 1950 he won the safe Country Party seat of Isis in the Legislative Assembly of Queensland.