One Pot Cheesy Taco Skillet

lean ground beef

large yellow onion (diced)

bell peppers (diced)

diced tomatoes with green chilis

large zucchinis (diced)

taco seasoning

baby kale/spinach mixture (this sounds like a lot- it cooks down to a small amount, optional)

shredded cheddar and jack cheese

green onions (to garnish)