In some ways I am fortunate in that a lot of the things that really tempt other people either don't interest me or are things that I would end up with an upset stomach if I try and eat. Anything greasy or fatty (bacon, pizza, cheese, burgers, ice cream) gives me indigestion. And I don't care for chocolate. Chips and soda don't really tempt me either.
My weakness is baked goods of one sort or another (donut, muffin, scone, etc), but only good ones. Crappy gas-station donuts are always disappointing, so I don't bother with those. Potatoes are another thing that would tempt me, but our solution is that we don't eat them at home very often.