Combine the vegetable oil, chopped chipotle peppers in adobo, garlic powder, cumin, dried oregano, and black pepper in a small bowl and stir to combine. Place the chicken in a large zip top plastic bag and add the marinade. Zip the bag and mix the chicken into the marinade. Place it into the fridge and let it marinate for at least 1 hour.
Heat an indoor or outdoor grill to about 400 degrees F (medium high heat). Place the chicken onto the grill and grill 5 to 6 minutes per side, until the chicken is cooked. Remove the chicken from the grill and let rest for 10 minutes. Chop the chicken into small bite sized pieces and use as needed.
For the Rice
In a heavy saucepan, heat the oil over medium heat. Once hot, add the white rice and lime juice and sauté for 60 seconds to toast the rice. Add the water and bring the rice to a boil. Cover and reduce the heat to low and cook until the rice is tender and all the water is absorbed. Add in the cilantro and fluff rice with a fork.
Arrange equal parts of the white rice and chopped grilled chicken in 4 bowls. Top with equal parts of the Sliced Avocado, grilled bell peppers, grilled zucchini, Monterey jack cheese and serve alongside the cilantro vinaigrette.