Good question, I'll be curious about others answers. Seems that as long as the drainage is good there shouldn't be a problem. Unless the glazed pot is different color, it could be a temperature thing. Funny.........I had the same thing with 2 pepper plants also.....one was doing much better and I can't figure out why.

i am personally not a fan of "glazed" pots. from what i have read/personal experience is that the glazed pot will retain more water as well as restrict the air flow. the unglazed pots help with "wicking" water and allowing the soil to breathe. i have a succulent in a glazed pot that i water every 14 days and the same sized succulent in the same sized unglazed pot i water every 7 days.

Eric

I prefer unglazed pots because there is a little less chance of overwatering. But glazed pots are no worse than plastic pots, and are usually more attractive than plastic. What really matters is the mix you use in the container. I have grown succulents in gritty mix and orchids in fir bark or sphagnum moss in glazed pots with no problems. I do water less in any pot that is impermeable.

I was thinking the same thing as Ohio.

I grow many plants in just about anything and I find that using a grittier mix or one that is porous allows room for this.

If you are using regular mixes or ones that take time to dry out, then I would be very cautious of how much water mine receive in plastic and non porous/glazed containers.