If you use peat in the soil mix, you MUST use lime too. Peat needs to be buffered against low pH. That soil looks too wet as well. The plants aren't bad yet, but you should plan to transplant into a light, airy, pH correct potting mix ASAP. You can find ProMix BX or HP at any garden center or nursery, or use a good humus compost with plenty of extra perlite for drainage.