If you can find frozen veggies, I highly recommend purchasing! Veggies are frozen at their peak and rival fresh veggies when it comes to nutrition. PLUS, you won't have to deal with dicing yourself. Be sure to read the oven instructions on the bag in case it differs from what I have listed here.
I have a couple of great aioli/dressing recipes for you:
ranch dressing,
basil aioli,
cilantro lime dressing and buffalo aioli (coming soon!).
It's difficult to find store-bought dressings that don't have junk in them. They're pricey, but I recommend either Primal Kitchen or Tessemae's if you don't want to make it yourself. Alternately, you could make your own simple dressing of extra-virgin olive oil and some sort of acid like red wine vinegar or lemon juice. It's so simple yet so yummy!
Lunch meat brands can also be tricky as well. If you're Whole30-ing, you need to look out for added sugars. And just in general, you want to look out for excessive sodium, nitrites or nitrates, carrageenan and MSG's. Here are a few of my favorite brands: Trader Joe's (you'll have to check the ingredients, but they have some good ones!), Applegate and True Story. Unfortunately, better for you lunch meats are more expensive, so sometimes a rotisserie chicken or
roasting your own chicken might be a good option!