Another food option is simply of course steak and green fiberous veggies (fat optional)- just mentioning it because its just what I ate (10pm here - and surprisingly tired).
Spinach is probably the best pre-bed veggie (and unlike say brocolli, it doesn't taste like shit and absorbs other flavours). It has far less net carbs than brocolli.
It's macros are amazing - 100g has 23 cals, 2.9P, 1.4 Net Carbs, 0.4 fat (of which 1/3 is omega 3), and "a good source of Niacin and Zinc, and a very good source of Dietary Fiber, Protein, Vitamin A, Vitamin C, Vitamin E (Alpha Tocopherol), Vitamin K, Thiamin, Riboflavin, Vitamin B6, Folate, Calcium, Iron, Magnesium, Phosphorus, Potassium, Copper and Manganese":
Nutrition Facts and Analysis for Spinach, raw.
(an all spinach diet with sunlight at 2000 cals would hit every macro and micronutrient but B12)