Place raw chicken and Cajun seasoning in large freezer bag and shake to coat. All the other ingredients, except pasta. Gently mix in the bag to combine. Remove excess air, seal and freeze.
Cooking instructions:
Thaw. Place contents of bag in a slow cooker and cook on low for 4-5 hours or on high for 2-4 hours. Or cook in the instant pot on high pressure for 12 minutes with a quick release. Shred chicken. Stir in cooked pasta.