Those look more like peck marks than Fowl Pox, to me. If the scabs get larger or become more numberous, it's probably Fowl Pox. Whether they are scabs or Fowl Pox, it isn't too much to worry about. Scabs should go away in a week or so. Fowl Pox lasts for up to 6 weeks or so, and is rarely fatal, unless it turns into the wet form (which invades the throat).