In a medium bowl, combine the chicken thighs with chipotle sauce, smoked paprika, garlic powder, onion powder, salt, and pepper. Toss to coat the chicken evenly and marinate for at least 30 minutes in the refrigerator.
Cook the brown rice according to package instructions, substituting chicken broth for water for added flavor (typically 1 cup rice to 2 cups broth).
While the rice is cooking, heat a grill pan or skillet over medium-high heat. Add the marinated chicken thighs and cook for about 5-7 minutes per side, or until they reach an internal temperature of 165°F (75°C) and are charred nicely. Remove from heat and let rest for a few minutes before slicing.
In a bowl, mix together the black beans and corn. You can heat them briefly in the microwave or on the stove if desired.
Assemble your burrito bowl: start with a base of brown rice, add a generous portion of black beans and corn, followed by the sliced chipotle chicken.
Top with sliced avocado, halved cherry tomatoes, and chopped romaine lettuce. Sprinkle shredded cheese on top.
Garnish with fresh cilantro and serve with lime wedges on the side for squeezing over the top.