It's possible that the CHROME_PATH variable is being ignored because it contains a space or special character. Try wrapping the value in quotes to see if that resolves the issue:
CHROME_PATH="test"
If that doesn't work, try clearing the config cache:
php artisan config:clear
If the issue persists, try manually setting the $_SERVER variable in your bootstrap/app.php file:
$_SERVER['CHROME_PATH'] = env('CHROME_PATH');
This should ensure that the variable is set correctly.