Melt the butter in a skillet. Add the chicken and sprinkle with salt, onion powder, and basil. Then, add the onions and garlic to the pan around the chicken.
Cook the pasta according to package directions.
Cook the chicken and spices until the chicken is lightly browned on each side, roughly 5 minutes per side.
Remove the chicken from the pan and add the sundried tomatoes.
Add the bay leaf and the chicken stock.
Add the milk.
At this point, allow the sauce to simmer over low heat until it's reduced by about half. Then, it's ready to serve. Pour the sauce over the pasta and set the chicken on the side. Simple!