Any idea what is happening to this Cherry Bomb pepper?

[Ptah]

Others from the same nursery are doing fine in a different location.
I even picked a pepper from one of the others today.
Could it be too much fertilizer?

[alittlelark]

1. It looks overwatered to me...

I would take off the damaged leaves (not gonna heal), cut way back on water and keep her warm.

On edit- if u reuse soil you could have a salt buildup. The clay pot could also have a salt buildup if it wasn’t cleaned well.

[Ptah]

2. Thank you, alittlelark

The soil in that pot is at least three years old. And the pot hasn't been cleaned in many years.

I'll replant it in a clean pot with fresh soil.

[ultralite001]

3. Move it where the other plants are...

May be

Cool/cold draft...
Low light level...
Overwatering... Let it dry out a bit
Root bound w/ repotting stress...
Pull the pepper out of the pot + make sure it's not drowning...
Free up / untangle the roots before repotting...

Hope this helps...

[Ptah]

4. I've had success in previous years with this location on my porch.

I do like your suggestions:

Overwatering... Let it dry out a bit
Root bound w/ repotting stress...
Pull the pepper out of the pot + make sure it's not drowning...
Free up / untangle the roots before repotting...

Thanks for the help.

[Ptah]

5. It's looking good after replanting in fresh potting soil.