In the family of furniture beetles, Anobiidae, there are only two species that have adapted to living in food. The drugstore beetle is the more common of the two, while the cigarette beetle is rare outside actual tobacco stocks. Like all furniture beetles the larvae live in burrows, which they gnaw and the result is rotten goods. Small round holes in the packaging can be found in places, where the beetles have gnawed their way out.
Furniture beetles have a distinctive humpbacked appearance because their heads are bent under an arched prothorax. When there are many beetles with that appearance in food or tobacco, it is almost always furniture beetles or cigarette beetles. If only a single beetle is found, it should be investigated further. This could just be a common furniture beetle that fell into the product from rotten wood.