Plug in a large crock pot and turn on high.  Prepare the chicken by removing it from the package. Remove the inside package & keep any organs you enjoy.  (Our dog enjoys them every much!)  

Insert the prepared celery and onion slices into the cavity of the chicken.  It doesn't all have to fit perfectly.  Place the chicken in the warm crock pot. Sprinkle the top of the chicken with Bragg's seasoning and add the parsley sprig. (Fresh or dried parsley is fine.)

Wash and prepare your vegetables.  The amount of vegetables you had will depend on the palate of your family members.  Add the vegetables to the crock pot.  Gently place the garlic cloves on top, this is so they won't get lost.

Roast on high for 4-6 hours.  Roast on low for 8-10 hours.  

When it's time to serve, transfer the chicken meat and vegetables from the crock pot to a serving platter.  A large slotted spoon is helpful for removing the meat off the chicken and scooping up all the vegetables.  The chicken will be juicy and most likely fall apart.   Any chicken that gets left in the crock pot will be gathered after chicken broth is prepared.  Serve warm!