Spray 5 to 6-quart crock pot/slow cooker with cooking spray.
Season chicken thighs with salt, pepper, and dried oregano; add to slow cooker in one layer.
Add artichoke hearts and sun-dried tomatoes (taken out of oil) over the chicken; sprinkle with garlic.
Take a ⅓-cup of the liquid from the jar with the artichoke hearts and pour it over the top.
Cover; cook on HIGH for 4 to 4-1/2 hours, or on LOW for about 6 hours.
Transfer to serving plates.
Sprinkle with fresh parsley.
Prep Time: 5 min
Cook Time: 5 hours
Total Time: 5 hours 5 mins