First, create the marinade by stirring together the avocado oil, lime juice, finely chopped chipotle chilis, adobo sauce, garlic powder, and salt in a large bowl. Add the chicken strips to the bowl and toss them until they are completely coated in the marinade. Cover the bowl and let it marinate in the refrigerator for at least two hours, or overnight for an even more intense flavor.
Once the chicken has marinated, heat a large skillet over medium-high heat. Remove the chicken pieces from the marinade, letting any excess drip off, and place them in the hot pan. Cook, stirring occasionally, for about 5 minutes or until the chicken is cooked through and slightly browned.
While the chicken cooks, you can prepare the rice. Add the rinsed rice and salt to a pot of boiling water. Let it return to a boil, then reduce the heat to low, cover the pot, and let it simmer for 15-18 minutes, or until all the water is absorbed and the rice is tender.
Once the rice is cooked, uncover it and fluff the grains with a fork. Add the lime zest, fresh lime juice, and chopped cilantro, tossing everything together until well combined. To assemble your burrito bowls, start with a base of rice and chopped lettuce, then top with the cooked chicken, diced tomatoes, avocado, corn, black beans, and red onion.