Heat oil in a large oven-safe skillet over medium-high heat.
Add the cubed chicken breast and season with seasoning salt and garlic powder.
Cook for 3-4 minutes, turning once or twice, until starting to brown.
Add the garlic, Italian seasoning, salt and red pepper flakes and cook 1 minute.
Add the broth and scrape any browned bits from the bottom of the pan with a wooden spoon.
**Turn on the broiler to preheat if using -- adding the broiled bread crumb topping is optional but well worth the extra step!
Bring to a simmer and stir in the uncooked pasta and marinara sauce. Bring back up to a simmer, cover and reduce heat to medium-low. Cook for 10-12 minutes until pasta is al dente. Taste and adjust seasonings as desired.
Turn off the stovetop, sprinkle the pasta with cheese. Stir together the Panko, Parmesan and oil and sprinkle over the cheese.
Broil for 2-4 minutes, until light golden and slightly crisp. Remove and serve.
