Is this spider plant the hawaiian variety. I have one, and it does have big leaves compared to other spiders. I find bent leaves if I let it go too dry. I am sure overwatering would do it also. Your plant does look very happy.
This is probably advice I should just keep to myself, but when my cats were roughhousing and one landed on my plant, flattening a number of the big main leaves, I took a piece of scotch tape to the underside of each leaf, and stuck it right on the underside of the bend. It supported the leaves and they repaired themselves in time. I am sure it is not the best thing to do to leaves, but it did work for me aesthetically. Ok, now let's never speak of this again, and good luck.