Combine 2 cups of chicken broth (reserve one cup for later) and one can of diced tomatoes with juice in a microwave proof container. Heat this in the microwave for 3 minutes or until hot
Turn on your broiler and place the sheet pan under the broiler
Heat the Dutch oven with 2 tablespoons of canola oil
Saute the diced onions and peppers for 2-3 minutes. Add garlic and stir for 30 seconds more
Break the angel hair pasta into thirds, place in the Dutch oven and stir.
Pour the hot chicken broth/tomato mixture over the pasta, stir and top with broccoli
Cover and simmer for 2 minutes. Stir in the remaining cup of chicken broth and butter and Parmesan cheese if using. Cover and cook for another minute or two until done.
While the pasta is cooking, season the flounder with 1/2 teaspoon of salt, 1/8 teaspoon of pepper and 1/4 teaspoon of granulated garlic.
Remove the sheet pan from the broiler, pour 1 tablespoon of canola oil on it and add the flounder
Place the flounder under the broiler for 3 minutes