Chipotle Chicken Fajitas

Name: Chipotle Chicken Fajitas
Ingredients: 4 boneless, skinless chicken breasts; 2 Tbs. Spicy Chipotle Rub; 2 Tbs. vegetable oil, plus more for brushing; 1 red onion, sliced; 1 red bell pepper, seeded and cut into strips 1/2 inch (12 mm) wide; 1 green bell pepper, seeded and sliced cut into strips 1/2 inch (12 mm) wide; Salt and freshly ground pepper; 8 to 12 flour tortillas, warmed; Crumbled cotija cheese for serving; Fresh salsa, purchased or homemade, for serving; Chopped fresh cilantro for serving; Lime wedges for serving