Melt the coconut oil in a large skillet over medium-high heat.
Add onion, garlic and celery; cook until slightly soft.
Add chicken cubes and brown on all sides (but don’t worry about cooking them through).
Transfer mixture to a crock cooker then add squash, caraway seeds, salt, pepper, tomatoes and broth.
Cover and cook on MEDIUM-HIGH for 3 hours.
Add kale and stir to combine.
Cover and cook for 30 minutes to 1 hour or until chicken cubes are fork-tender.