Meanwhile, peel the corn and either cook it on a hot grill or a grill pan until its charred in spots, about 8-10 minutes. When ready, cut the corn kernels off the cob and place in a large bowl. Pre-heat a small pan over medium-high heat and add the frozen edamame to the pan along with 1 teaspoon of oil and cook for 5 minutes until warmed through. Add the edamame to the corn along with the red onions, bell pepper, sliced chile, parsley, walnuts, lime zest and juice, ¼ teaspoon salt, and a few cracks of pepper. Mix very well and check for seasoning, set aside.