It appears to have a deficiency of Nickel, which is the central atom in the construction of the enzyme, urease, which plants need to properly metabolize urea. The visible indication is the tiny dead tip on each leaf. Have you fertilized with urea? Or used a soil mix containing urea? Or perhaps that plant is some critters favorite spot to pee? Some Seaweed extract would supply Nickel, and other trace nutrients. Some fertilizers also contain traces of Nickel, which is often together with Iron or with Manganese, in minerals.
This still doesn't explain the eye-catching upward curl of the leaf margins.