Then season chicken generously with salt and pepper.
Next you want to sprinkle half of oregano, rosemary and garlic inside cavity of chicken.
Now you can melt butter in frying pan and brown chicken; transfer to slow cooker or crockpot.
Then sprinkle with remaining oregano, rosemary and garlic.
Add your sherry to frying pan and stir to loosen brown bits; pour into slow cooker.
Finally, cook on LOW flame for approx. 7 hours; adding in the lemon juice and cook approx. 1 more hour (total of 8); transfer your chicken to cutting board; skim fat from juices and serve over chicken.