Option 1

add_filter( 'genesis_pre_get_option_site_layout', 'genesiscustomlayout' );
function genesiscustomlayout(){
	$pageobj = get_queried_object();
	$pageid = absint($pageobj->ID);
	$pagelayout = get_post_meta($pageid , "_genesis_layout" , true);
    return $pagelayout;
}

Option 2

This function is to forced your custom post type content layout to full width. Common post type is post, page, and product ( woocommerce plugin pages ) and etc.

Copy the codes below and paste it into your function.php. Just change the ‘product’ to your custom post type.

function custom_post_type_layout(){
    if( 'product' == get_post_type() ) {
        return 'full-width-content';
    }
}
add_filter( 'genesis_site_layout', 'custom_post_type_layout' );