Preheat your grill to 450 (or medium high) with grill basket in the center on the bottom grill grate.
In a large bowl, toss together the peas, mushrooms, garlic, 1/2 tsp of lemon zest, olive oil, salt & pepper.
Add the mix to the heated grill basket on the grill. Cook, tossing every few minutes, for 10-20 minutes, until the vegetables reach your desired texture. I like mine with a little bite still, and my grill is a little slower, so it takes about 15 minutes.
Once done, add the vegetables to a bowl with the chopped herbs, a few pinches of lemon zest, and a squeeze of fresh lemon juice. Toss together, and serve warm. Enjoy!