Set front page when Pod CPT is saved.

functions.php

add_action('pods_api_post_save_pod_item_book', 'tht_set_home', 10, 3);

function tht_set_home( $pieces, $is_new_item, $id ) { 

	 //get the value of the 'genre' field 
     $featured =$pieces[ 'fields' ][ 'book_featured' ][ 'value' ]; 
     $blog = get_page_by_path( 'blog' );
      
     if( $featured ){
    	update_option( 'show_on_front', 'page' );
    	update_option( 'page_on_front', $id );
    	update_option('page_for_posts', $blog->ID);
	}
}