Run, don't walk to your nearest Chick-fil-A: now through September 29, the fast food chain is giving away a free eight-count chicken nugget to anyone who downloads their app. If you already have the app, that's fine too — just log into your account to access the coupon. In the app, you can prove your level of dedication by climbing up the tiers. Everyone starts as a Chick-fil-A One Member, but you can move up to a Silver or Red member the more often you go.