In a large skillet, brown the ground beef over medium heat until cooked through. Drain the excess fat and set the beef aside.
Pour the stewed tomatoes into the slow cooker. Use a butter knife to cut them into smaller chunks directly in the pot, or dice them beforehand if you prefer.
Add the browned ground beef, diced onion, garlic powder, chili seasoning packets, drained kidney beans, and V8 juice to the slow cooker. Sprinkle in the pepper.
Stir everything together until combined. Place the lid securely on your slow cooker.
Cook on low for 8 hours, or set to high for 4 hours for a quicker option.
Once done, give it a final stir and serve hot with your favorite toppings like shredded cheese, sour cream, or green onions. Enjoy!