Erm, when DD was a newborn I ploughed through PILES of bananas, dried apricots, chocolate raisins, dark chocolate and homemade seeded/fruited flapjack and a gazillion chocolate hobnobs
Looking back, as snacks go, that wasn't too bad - lots of fibre and iron in that lot, but also a lot of sugar.
Pot of hummus with raw veg (buy preprepped carrot batons if you want an easy life) and pitta might be good
Raw nuts have lots of good protein, fats & general nutrients: Almonds good for Vit E, calcium, cashews good for iron, brazils for selenium, walnuts for omega 3s.
Olives?
Peanut butter on toast?
Make yourself a tub of your preferred nuts/seeds/dried fruit so you can grab a handful as and when. I would also add some broken bits of very dark chocolate (85% + for me). Not only is it delicious, but cocoa is very nutritious - a great source of iron actually which 2 weeks post partum is probably very helpful.
Chunks of cheese with cherry tomatoes? On oatcakes if you like.
Get your DH to leave you a packed lunch in the fridge so you can definitely get something to eat - cold meats/sausages, hard boiled eggs, cheese, prepped bits of veg/salad (pref finger food!), frittata in slices, would all be good options.
Or leftovers from dinner that you can zap in the microwave - eg chilli (also do baked potato in microwave/oven), bolognaise (just cook some pasta), stew (add a hunk of bread & cheese)
Eggs on toast? That's super fast if you have scrambled.
Congratulations!