It doesn’t matter if it’s smooth or chunky…If you’re flying with peanut butter, you’ll need to put it in your checked bag. TSA is treating peanut butter as a liquid because it conforms to the shape of the container. If you aren’t sure about what can and can’t go in your carry on, check the What Can I Bring page. If you’re a Star Wars fan, see what TSA has to say about carrying on a lightsaber…