Set your crockpot to high. Drop in the raw meat, onion, chili powder, garlic powder, paprika, butter, and ketchup. Season with salt and pepper. Stir, breaking up the meat. Pour over the broth. Cover and cook on low for 3-4 hours or on high for 1-2 hours.
During the last 15 minutes of cooking, crank the heat to high. Stir in the pasta, zucchini, and milk. Let cook on high until the noodles are soft, about 15-20 minutes. Add the cheddar, stir until melted.
Divide the pasta among bowls and top with fresh parsley. Enjoy!
