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If kept frozen continuously, chicken will be safe indefinitely, so after freezing, it's not important if any package dates expire. Cooked chicken will taste best if kept frozen up to 4 months, cooked poultry casseroles or pieces covered with broth or gravy, 6 months, and chicken nuggets or patties, 1 to 3 months.
1 to 2 daysTo maximize the shelf life of cooked chicken nuggets for safety and quality, refrigerate the chicken nuggets in shallow airtight containers or wrap tightly with heavy-duty aluminum foil or plastic wrap. Properly stored, cooked chicken nuggets will last for 1 to 2 days in the refrigerator.