thinking a combo of over-watered / mag def? Thoughts

I have had my plants outside hardening off for the past week + but a couple, not all, have leaves like these two. I had put in some extra water as last year a few of my first plants dried up when I put them outside.
 
Also, gave them a shot of miracle grow (just a low dosage) last week, might be contributing some fert burn...
 
Another thought I just had might be a little rootbound in these small containers...
 

 

 

[santis00]

whoops was looking at Glogs when I decided to post this. please delete or move. Sorry everyone!

 

[Devv]

I say sunburn, it will be OK..
 
First time in full sun?

 

[pepperguy1]

+1 on sunburn.

 

[mpicante]

Sunburn!