01 - Pat chicken breasts dry with paper towels. Season both sides generously with kosher salt, black pepper, garlic powder, and paprika, pressing the spices into the meat to adhere.
02 - Heat olive oil in a large, deep skillet or sauté pan over medium-high heat until shimmering. Add chicken breasts and sear for 3 to 4 minutes per side until deeply golden brown. Transfer chicken to a plate, leaving the rendered fat in the pan.
03 - Add minced garlic to the hot pan and sauté for 30 seconds until fragrant, being careful not to burn. Pour in chicken broth and bring to a rolling boil, using a wooden spoon to scrape up any browned bits from the bottom of the pan.
04 - Add egg noodles to the boiling broth, stirring to submerge as much as possible. Return to a boil, then nestle the seared chicken breasts on top of the noodles. Reduce heat to medium-low, cover tightly, and simmer for 12 to 15 minutes. Stir noodles once or twice during cooking to prevent sticking. Continue until noodles are tender and chicken reaches an internal temperature of 165°F.
05 - Remove cooked chicken from the pan and set aside on a clean plate. Stir butter, parsley, and Parmesan cheese (if using) into the noodles until melted and glossy. Slice chicken breasts or serve whole over the buttered noodles. Garnish with additional fresh parsley if desired.