In a medium sauce pan, bring water to rapid boil. Slowly pour oatmeal into boiling water, stirring constantly. Return to a boil. Reduce heat and simmer for 8 to 10 minutes, stirring occasionally. Remove from heat and let cool.
Mix the oatmeal, yogurt and honey together. Chop the orange into small pieces. Divide the mixture into 4 bowls or jars. Top each parfait with 2-1/2 tablespoons each of banana and diced orange and 1 teaspoon orange zest. Serve cold.