Kale Pesto Couscous Stuffed Peppers

bunch kale, large veins removed

packed basil leaves

olive oil

garlic cloves, chopped

parmesan, divided, plus more for topping

salt and pepper,

whole wheat couscous, prepared according to packaged directions

large red bell peppers, tops cut off and core removed

tomato, cored and diced

kalamata olives, pitted and chopped