Check soil moisture. Take a magnifier and look for sucking pests like mites on the leaves. Otherwise maybe it needs greenhouse humidity.

I will check! If it is mites, any spray recommendations?

If you could post pictures, that would help. Dark Mystery pilea apparently likes bright but non-scorching light, humid air, well-draining soil, and regular water. What sort of conditions is your plant in? Is it still cold where you are? Crispy leaves can be caused by a number of things, from pests to cold to heat to root issues. We need more info to give you good answers.

Does that Glazed pot have a drain hole? What is the soil?

Yes to drainage, and it’s standard potting soil.

Oh, and I’m in the southeast US. It’s already quite warm here.

Okay, so I'm thinking it's two things. First, the indoor weather: Pilea, as a true tropical, wants extremely high humidity -- 60% or more -- and temps between 62 at night and 85 in the day. Drier than that, it'll start getting crispy. If you can give it a small humidifier, it'll thank you.

Second, "Standard potting soil" tends to be extremely dense, and pilea wants a loose, freely draining mix. I would take it out of the pot, shake out the dirt, mix in 50% perlite, and put it all back together. If you have something like reptibark, you could do 1:1:1 bark, perlite, and commercial potting mix, but you'll need to water a skoosh more often. (Note: avoid any "moisture retaining" potting mixes. They turn to sludge in the pot and suffocate the roots. Roots need air as much as they need water, hence the use of perlite to open things up within the pot.) Good luck!

the pot is way too big for it , it can rot easily if overwatered. I'd down-pot first to let it recover. and once it starts growing, then give it a larger pot back.

I have the same problem with my pilea dark mystery. It was a discounted plant from Lowe's, so it was already in tough shape. I'm sure humidity was not an issue because we have had humidity above 60% all summer. I have had the plant in low light, and it is still in its original nursery pot. New leaves appear, but before they are even full grown, they start drying out around the edges.

I am going to take HU-201321195's advice and repot it using a loose, well-draining soil and see if that helps. I have other pileas that are thriving, so this one is really bugging me!

Ginger Zinkowski, my story verbatim! Even same store. I'm going to follow HU-201321195's advice, too. How is yours doing now after that change?

Mine is still hanging in there, but far from thriving.

I was gifted a tiny dark mystery plant a little over a year ago. And although it’s been through a lot, right now, It’s doubled in size and is flourishing and doing quite well. When I first got it, it was crispy ((very crispy)). To make matters worse, last fall just a few weeks after having it- it got a little frost bite. And became limp and droopy after the temperature dipped to 50F and I forgot it by the window. My best friend’s mom (a plant biologist), advised me to completely saturate the soil with some warm water and allow it to drain completely which immediately brought it back to life, I was amazed!!! For care, I keep it in a shaded area, water when it feels dry during summer months and every two weeks during fall - winter with distilled water and give it a nice warm bath once every six weeks. this keeps it nice and soft. It also stands vert well. The plant is in a small 4in plastic draining container which sits in an a 4.5in Ceramic pot filled with stones and a little bit of water for steady humidity.