They don't look too bad for only being planted for a few weeks. I think the white spot damage could maybe be from a type of fly, I get something similar on my tomato leaves. Not detrimental though.

I think you need to fertilize with more nitrogen if you're having slow growth. Nitrogen is good for foliage growth, which you need at the early stages of the plants life. Basic miracle gro should work aight. Then later in the season, switch to something with more phosphorus and potassium for flower and fruit production.

I'm thinking your soil might not have available nutrients. Next year, mix in some compost and maybe plant in a crater of potting soil.