Dice the chicken breast into bite-sized pieces and toss in a bowl with the chipotle peppers, lime juice, sea salt, and black pepper.
Heat the olive oil in a large skillet over medium-high heat.
Add the chicken to the skillet and cook for 5-7 minutes until golden brown and cooked through, then remove the chicken and set aside.
In the same skillet, add the sliced red bell pepper and red onion, sautéing for 4-5 minutes until they are tender-crisp.
Steam or lightly sauté the cauliflower rice in a separate pan until tender, seasoning with an extra squeeze of lime if desired.
Assemble the bowls by dividing the cauliflower rice, sautéed vegetables, and black beans into serving dishes.
Top with the cooked chipotle chicken, sliced avocado, and fresh cilantro before serving.