How to respawn an object again after it has been instantiated

This is for a snake game, and i have looked everywhere, and spent days doing it so this really is my final resort.

I am using two prefabs, one for a body to add to the snake, and another one for food. I have it set up so that at the start, the food randomly respawns, and after collision does create the instance of the body prefab. However, i need it to respawn again after collision, and it simply doesn't. Only the once. How do i get to respawn again and again?

 //Bodyprefab
 var BodyPrefab : Transform; 
 
 // food prefab
 public var pickupPrefab:GameObject;
  
 // the spawnpoint to be spawned out
 private var spawnPoint:GameObject;
  
 
 //awake functions are called before the script starts
 function Awake()
 {
     // retrieve GameObject tagged as 'SpawnPoint' within the 'PickupSpawnPoints' GameObject which this script is a Component of
     spawnPoint = gameObject.FindWithTag("SpawnPoint");
     
    // spawn the pickup
     SpawnPickup();
 }   
     
 function OnControllerColliderHit (collision : ControllerColliderHit) 
 {
     if(collision.gameObject.tag == "Player")
         {
           print ("FOOD!");
           Instantiate(BodyPrefab, GameObject.Find("Snake").transform.position, Quaternion.identity);
 //originally it did say "Destroy(gameObject)" but i assumed that was destroying the food prefab, with or without it didn't make a difference.
           SpawnPickup();
           }
 }
 
 
     function SpawnPickup()
 {
     // retrieve the position and rotation of the pickup's spawn point
     var spawnedPickupPosition = spawnPoint.transform.position; // copy position
 
     spawnedPickupPosition.z = Random.Range (-11.7,11.8);
 
     spawnedPickupPosition.x = Random.Range(11.5,-11.9);
     
     var spawnedPickupRotation:Quaternion = spawnPoint.transform.rotation;
      
     // instantiate (create) the pickup prefab with the above position and rotation
     var spawnedPickup:GameObject = Instantiate(pickupPrefab, spawnedPickupPosition, spawnedPickupRotation);
      
     // set the spawned pickup as a child of the 'PickupSpawnPoints' gameobject that this script is a Component of
     spawnedPickup.transform.parent = spawnPoint.transform;
 }