Place a medium, deep pot over medium heat and add the 1 tablespoon of olive oil.
Once heated, add the minced garlic, chopped onion, Brussels sprouts, and chopped bell peppers. Allow them to cook until they have softened.
Once they have softened, add the canned tomatoes, remaining seasonings & pesto sauce. Mix well, cover and bring to a boil.
Once the sauce is boiling, add the shrimp, stir, and lower to a simmer for 15-20 minutes.
While the sauce is simmering, set the oven to broil on low and place a large pot of water over high heat and bring to a boil.
Cook the penne pasta according to the directions on the box.
Once cooked, combine the pasta with the sauce and mix well.
Scoop the pasta mixture into a large prepared baking dish. Fold in the feta cheese, sprinkle with the chopped parsley and parmesan cheese.
Place the dish into the oven under the broiler until the cheese has melted. Approximately 2-3 minutes. Keep a close eye on the dish to prevent from burning the pasta. Enjoy!