Dice the chicken breast into small, even bite-sized pieces.
In a small bowl, toss the chicken with the chipotle peppers in adobo, sea salt, and black pepper until well coated.
Heat the olive oil in a large skillet over medium-high heat. Add the chicken and cook for 6-8 minutes, stirring occasionally, until the edges are crispy and the chicken is cooked through.
While the chicken cooks, lightly sauté the cauliflower rice in a separate pan or steam it until tender.
Rinse and drain the black beans, then warm them slightly if desired.
Assemble the bowl by layering the chopped romaine lettuce and cauliflower rice at the base.
Top with the crispy chipotle chicken, black beans, sliced avocado, and fresh pico de gallo.
Finish with a bright squeeze of lime juice over the entire bowl before serving.