Use the AboutPage microdata schema for your About page with Genesis 2.0

functions.php

<?php
//* do not include php tag

add_filter( 'genesis_attr_body', 'about_page_body_schema' );
/**
 * Callback for Genesis 'genesis_attr_body' filter.
 * 
 * Use the AboutPage microdata schema for the About page.
 * 
 * @package Genesis
 * @category Attributes
 * @author Ryan Meier http://www.rfmeier.net/
 * 
 * @param array $attributes The array of attributes
 * @return array $attributes The array of attributes
 */
function about_page_body_schema( $attributes ) {
        
    // if About page, use the AboutPage schema
    if ( is_page( 'about' ) ) {
        $attributes['itemtype'] = 'http://schema.org/AboutPage';
    }
    
    // if Services page, use the ContactPage schema
    if ( is_page( 'services' ) ) {
        $attributes['itemtype'] = 'http://schema.org/ContactPage';
    }
    
    return $attributes;
        
}