Prepare cilantro black beans and rice. Combine rice and water in a medium saucepan. Bring to a boil over high heat; reduce heat to low and simmer, covered, for 35–40 minutes, or until tender. Stir in black beans; cook 2–3 minutes until heated through. Stir in lime zest, lime juice and cilantro. Set aside and keep warm.
While rice cooks, heat oil in a large nonstick skillet over medium-high heat, swirling to coat. Add onion, bell peppers, garlic, cumin and salt. Cook 3 minutes, covered and stirring occasionally, until vegetables are tender. Stir in shrimp; cook 2–3 minutes, stirring often.
Place 1 cup rice and bean mixture in each of 4 bowls. Top each with 1 1/4 cups shrimp and vegetable mixture. Top each serving evenly with romaine, tomato and avocado. Optional - top with sour cream, shredded cheddar, or jalapenos!