An ounce of dark chocolate (142 calories), for example, or 1.25 ounces of baked potato chips (166 calories) fall well within that range.

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Subway has taken such a stealth-health approach with its combo meals, which offer, for example, a sandwich, Coke Zero, and baked Lays potato chips.

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Meanwhile, PepsiCo CEO Indra Nooyi has been criticized for trying to move the company toward healthy snacks, like Quaker granola bars and baked Frito-Lays potato chips, and away from its soda lines.

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