Pei Wei: Buy One Get One FREE Coupon February 4th, 2013 By Kaley Leave a Comment Pei Wei is also offering a Buy One Get One FREE coupon for their new Black Pepper Chicken when you watch a short video on the creation of the dish. Your coupon will arrive via email within one business day. Offer ends 2/15. Check out the rest of the Restaurant Deals for even more savings! Never miss another deal! Subscribe to our FREE email newsletter or follow us on Facebook. Thanks for stopping by!