Preheat oven to 400 degrees. Cut off the top of the head of garlic and mist with olive oil or a cooking spray. Roast in the oven for about 15 minutes until garlic is tender. Remove from oven and let cool for about 10 minutes. Chop finely.
In a small bowl, combine roasted garlic, cilantro, olive oil, lime juice, honey, and red pepper flakes.
Prepare grill or heat a cast iron grill or griddle over medium high heat. Mist the shrimp with an olive oil mister or cooking spray, and season with salt and pepper. Cook shrimp for about 3-4 minutes on each side, or until shrimp is pink, cooked through and slightly charred.
Remove from grill and immediately place in the bowl with the garlic cilantro. Toss well to coat a ll the shrimp.