[dmforcier]

I can't quite make out the Miracle-Gro proportions. Is that 27-6-27 ?? Strong stuff, and not what I'd use on peppers. (a multiple of 3:1:2). Tomatoes are reputed to need somewhat less N than peppers. I typically see "tomato" ratios of 1:1:1 or similar.

Me, I wouldn't use any ferts at all on seedlings. Not until they get up in the 4-6" range.

In you last pic, the pots are WET. A few are just starting to dry at the surface, which is good. Trust me - under-watering is not your problem.