Cook egg noodles according to package directions. Drain and set aside.
In a large skillet over medium heat, melt butter.
Stir in garlic powder, onion powder, salt, and pepper.
Add cooked chicken and heat through, stirring occasionally.
Add drained noodles to the skillet and toss until well coated.
Sprinkle with Parmesan cheese and parsley if using.
Serve warm and enjoy!