Dice onion and celery and roughly chop all veggies except kale into 1-2inch pieces, then add to slow cooker with herbs and optional bone broth powder.
Rinse Chicken and place on top of veggies then pour water in until just nearly covering the chicken.
Add whole stems of kale and parsley (uncut).
Cook on low setting for 8 hours or high setting for minimum 4 hours
When ready, remove kale and parsley or coriander and discard.
Remove chicken, place on cutting board and take as much chicken off as possible, setting remaining bones aside for bone broth. Shred the chicken and return to slow cooker. Season with salt.
Optional: Before serving add 50-100g of rice noodles, let soften for a couple minutes then serve.