Steaklets had a bluewish & brownish colour & smell

County Fair Creamy Pepper Steaklets<br> I purchased 4 boxes of County Fair Chicken Steaklets Creamy Pepper Sauce at Pick n Pay Vangate Mall on the 21/03/2015. We were having friends over for the evening so I decided to make this steaklets with salads for a light snack I prepared the first 2boxes & it was fine but the third box when I opened the box I never got any smell frying it was ok. But when I served it the guests complained that it had a funny taste. When we took the coating off we saw those fillets had a different colour to the others it had a bluewish brownish colour. I advised them not to eat it. I was extremely embarrassed as my one guest asked me why do I serve them old food. I would like an explanation as to what went wrong with this product. I'm use to buying this product as its a delicious product but this has put me off as to buying this product ever. <br>