Grilling is our cooking method of choice for these early summer days, but it's not all about the meat.  Actually, our summer diet has tilted vegetarian since we started making this Grilled Greek Salad. I dreamt up this colorful dish in the colder months, with longings of summer. This salad knocked our socks off and had my meat loving husband requesting more. We made Grilled Greek Salad through bitter March sleet, April winds, and May rains. And now finally, with seasonal vegetables and balmy temperatures, we can grill in the sunshine. Unlike some grilled salads, this isn't grilling for cuteness. Grilled Greek Salad is a hefty, hearty entree salad, that relies on the grill to give the peppers, onions, and tomatoes their luscious char, and to add caramel sweetness to tangy halloumi cheese. Topped with kalamata olives and a tart lemon-zest vinaigrette for contrast, this salad is dynamic. Halloumi, for those not familiar, is a hard salty sheep-milk cheese from Cyrpus, a great cooking cheese that keeps its shape and texture at high heats.