Mix the olive oil, lime juice, cilantro, salt, cumin, and paprika in a large bowl or ziplock bag. Add the chicken and mix with your hands (or shake bag, if using ziplock) until the chicken is fully covered. Cover and place in the fridge for 20 minutes to marinate or up to 2 days in advanced.
Heat a heavy-duty skillet to medium/high heat. Add 1 tablespoon olive oil and the chicken breasts. Cook for 6-7 minutes on each side. Remove from pan and add the bell peppers to the pan (do not wash pan) cook bell peppers for 2-3 minutes or until tender.
To Assemble: Slice chicken into thin strips. Prepare two salad plates. Place half of the romaine lettuce on each plate. Top with 1 chicken breast on each plate. Divide the tomatoes, beans, bell peppers, and half of each avocado onto each plate. Drizzle with skinny chipotle ranch dressing.
To Make Dressing: Add all ingredients to a food processor and pulse until chipotle peppers and cilantro are well minced. Store up to 4 weeks in the fridge.