Heat oil in a large oven safe skillet over medium heat. Saute onions and peppers for 5 minutes and push to the side. Add in the ground beef and brown. Season beef with seasoning mixture while browning.
Pour the rest of the chili ingredients into the skillet and stir to combine. Bring to a simmer and let it simmer for about 30 minutes, stirring occasionally.
Preheat the oven to 400F and prepare cornbread topping. Mix cornbread according to package instructions - I usually do Jiffy corn muffin mix with extra milk and mix in 1 cup of shredded cheddar cheese.
Turn the heat off the chili and spread the cornbread batter over the top of it. Cornbread will seem like a thin layer, but it will puff up in the oven.
Bake for 20 minutes, until cornbread is cooked through. Let it cool some and serve!
Notes
You can replace ground beef with ground chicken, ground turkey or a meatless crumble.
Top chili pie with sour cream, pickled jalapeños, cilantro and green onions