Leaf curling can be an indicator of various problems, including heat stress, water stress, pests or a nutrient deficiency and it is hard to tell 100% from the images. I'm concerned by the leaves in the center of the plant. They do look very distorted. It could be a virus. Could you snap a couple of pics of the younger leaves in the center? It's easy to upload to the original post. Just click on the blue edit button at the bottom of the question and you will see the usual image editing area - click the green "add image" button to add new images to the post.
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