In a small jar combine oregano, basil, salt and pepper. Sprinkle half of this mixture over the cubed chicken and toss to coat. Set aside remaining mixture.
In an extra large saute pan over medium high heat, add oil and garlic. Let cook for 3 minutes then add seasoned chicken. Cook for 5 minutes.
In a large measuring cup, whisk together chicken broth, corn starch, remaining seasoning mixture, garlic powder, onion powder, and parsley.
Add broth mixture to pan with chicken. Also add milk and pasta. Stir to combine. NOTE** If the pasta is not fully submerged, add enough water to cover.
Bring to just a bubble then reduce heat to medium and cover pan. Let cook for 20 minutes.
Remove lid and stir in heavy cream. Let cook another 5 minutes, so the sauce can thicken before serving.
Keyword Chicken, chicken breast, cream sauce, garlic cream sauce, heavy cream, one pan, one pan dinner, one pan meal, small shells