If that is happening you might just need more carbohydrate in the meal to keep your blood sugar up. I know that makes me sound about as CW as it gets but consider this. The body needs a certain amount of glucose every day for things like immune function, the brain and other things. That salad is very low carb abd probably not even making it into your blood stream very much since the carbs are being eaten by gut microbes. So when you give yourself that big meal you exhaust what glucose you had, and apparently you aren't converting enough protein to glucose to meet your demands and your blood sugar dips.
-A little more carbohydrate in the diet. Doesn't have to be lots but some starch or a piece of fruit will likely help.
-More coconut fat. The more coconut fat you eat the less your glucose needs for the brain will be.
-You might be deficient in some nutrients that are necessary for synthesis of ATP or gluconeogenesis (making carbs out of proteins). Perhaps check your total nutrition if you aren't already.
Stabbing conventional wisdom in its face.
Anyone who wants to talk nutrition should PM me!