In a large slow cooker, combine the chopped chicken, frozen peas and carrots, frozen corn, chopped onion, and minced garlic.
Pour in the chicken broth and heavy cream, stirring to combine.
Add the softened cream cheese, breaking it into pieces so it can melt evenly during cooking.
Season with dried thyme, dried parsley, salt, and pepper. Mix well.
Cover and cook on low for 4-6 hours, stirring occasionally to prevent sticking.
About 30 minutes before serving, cook the egg noodles according to package instructions. Drain and set aside.
Once the slow cooker time is complete, stir in the cooked noodles and grated Parmesan cheese until fully incorporated and creamy.
Taste and adjust seasoning with additional salt and pepper if needed. Serve warm.
Enjoy!