Kinda Confused

Alright...My plant has been outside in a 8 inch pot in good store bought soil for about...almost 2 weeks. It managed to survive 1 night of slight snow showers and it kept growing and was lookin healthy, but! Now that the weather has been really nice...50-60-70f weather, it is looking a little unhealthy.

The stem is still thin and does not seem like its thickened at all. It has continued to grow more leaves but they are still small & tinting a little yellow which makes me weary. I have watered it regularally since its been outside and it has been in a good location to get sun.

It is just weird how it looked just fine up to a few days after the little snow shower. Any input anyone?

 

Smaller ammounts of water?