preheat broiler. in large bowl, toss the mushrooms with 3 tablespoons olive oil and pepper. coat thoroughly. spread evenly under broiler. cook turning often for 10 minutes. heat 4 tablespoons olive oil in saute pan, add lemon zest and onion cook until onion is translucent. add chiles, saute 1 more minute. add wild greens and lemon juice and remove from heat. add mushrooms to top of saute pan. return to high heat and stir gently until greens wilt. season with salt and pepper and serve.