Pat the beef chuck roast dry using a paper towel to ensure a good texture during cooking.
Place the roast in your slow cooker.
In a small bowl, mash together the softened butter, garlic powder, onion powder, salt, parsley, and dill until well combined.
Spread the butter mixture evenly over the top of the roast with a spatula or your hands.
Pour the beef broth, coconut aminos, and peperoncini juice around the roast.
Top the roast with the jarred peperoncinis, arranging them evenly.
Cover the slow cooker with the lid and set it to cook on low heat for 8-10 hours (or on high heat for 4-6 hours if needed).
Once done, use two forks to shred the beef into tender pieces directly in the slow cooker.
Toss the shredded beef with the surrounding juices and peperoncinis to distribute the flavor evenly. Serve warm and enjoy!