Do crispy leaves always mean underwatering?
No. Dry root-zone conditions are one possibility, but light stress and other factors can also be involved. Check the pot and damage pattern first.
Can direct sun make indoor leaves crispy?
Plants moved too quickly into stronger light can develop dry, damaged foliage. Match the location to the plant's light guidance and make changes gradually.
Should I cut off crispy leaves?
Removing clearly damaged material may improve appearance, but it will not resolve the cause. First review moisture, light, and recent care conditions.