In the medium-sized pot, melt ½ stick butter in a pot, add onion and pepper and sauté until tender. Add garlic and sauté 30 seconds more.
In the large pot, start to boil the pasta water, then proceed with the next steps until the water boils.
Then cook pasta according to package directions.
Start heating both iron skillets on medium-high heat with about 1 ½ Tbsp. oil (enough to liberally coat the skillets) for shrimp and fish fillets.
Add heavy cream to the Medium-sized pot along with sautéed onion, pepper, and garlic and let warm over low heat, then add cubes of cream cheese.
Whisk until melted, then add pepper jack cheese and whisk until melted. Add Cajun seasoning to taste.
Set aside on warmer.
When iron skillets are starting to release a little smoke from oil, add 2 Tbsp. butter and swirl to coat.
Add shrimp to one pan and fish fillets to the other. Don’t overcook!
As shrimp starts to curl up, flip quickly.
When ready, remove shrimp from skillet.
It only takes 1-2 minutes per side on medium-high heat depending on the size of your shrimp.
Flip fillets when you can see fish becoming opaque about ½ way up the fillets.
When done, remove fillets from the skillet.
Time to serve - Layer on each dinner plate: pasta, sauce, fish fillet, shrimp, more sauce and parsley garnish.