Sweet and Spicy Chicken Fajitas with Corn and Mushrooms

Name: Sweet and Spicy Chicken Fajitas with Corn and Mushrooms
Ingredients: 1/3 cup vegetable oil, plus more for oiling the grill grates; 1/4 cup torn fresh cilantro; 1/4 cup honey; 3 tablespoons fresh lime juice; 1 teaspoon fresh thyme leaves; 6 garlic cloves, smashed; 2 jalapenos, (seeds removed for less heat); Kosher salt and freshly ground black pepper; 1 1/2 pounds boneless skinless chicken breasts; 1 tablespoon vegetable oil; 8 ounces shiitake mushrooms, stemmed and sliced; 2 tablespoons unsalted butter; 1/2 teaspoon ground cumin; 4 ears fresh corn, kernels removed; 1 poblano pepper, seeded and chopped; Kosher salt; 3 scallions, sliced; Juice of 1 lime; For Serving: Warm tortillas, chopped fresh cilantro, crumbled Cotija cheese, guacamole, sliced pickled jalapeno, lime wedges, pico de gallo and sour cream