Add custom og:image with customizer if latest post is set to the front page

// =========================================================================
// ADD OPEN GRAPH IMAGE UPLOAD OPTION TO CUSTOMIZER
// =========================================================================
function og_image_customize_register( $wp_customize ) {
 
    // Add Settings
    $wp_customize->add_setting('customizer_setting_og_image', array(
        'transport'         => 'refresh',
    ));
 
    // Add Section
    $wp_customize->add_section('og_section', array(
        'title'             => __('Open Graph image', 'name-theme'), 
        'priority'          => 70,
    ));    
 
    // Add Controls
    $wp_customize->add_control( new WP_Customize_Image_Control( $wp_customize, 'customizer_setting_og_image', array(
        'label'             => __('Add Open Graph image', 'name-theme'),
        'section'           => 'og_section',
        'settings'          => 'customizer_setting_og_image',    
    )));
}
add_action('customize_register', 'og_image_customize_register');

// =========================================================================
// HOOK THE OG IMAGE INTO THE HOME PAGE
// ========================================================================= 
function add_og_image_to_homepage() { 
    if(is_front_page()){
        $og_image = esc_url( get_theme_mod( 'customizer_setting_og_image' ) );
        echo '<meta property="og:image" content="'.$og_image.'" />';
    }
 } 
add_action('wp_head', 'add_og_image_to_homepage');