Pat chicken dry and season generously with salt and pepper. Place chicken in a bowl and add the rest of the wet rub ingredients. Mix until chicken is well coated in the spice rub.
Grill chicken for about 5-6 minutes on each side, or until chicken is opaque and fully cooked through. If using a grill pan, cover the pan during the cooking process to make sure the chicken cooks through.
While chicken is on the grill, prepare the cauliflower rice. Heat a medium skillet with 1 tablespoon olive oil. Add in cauliflower rice and the rest of the ingredients and sautè for 5-8 minutes, until the cauliflower is cooked through. Take off heat and set aside. Taste and adjust seasoning as needed.
Once chicken is cooked through (reads 165ºF on a meat thermometer), let cool, dice or slice, and set aside until ready to eat.
In a separate medium skillet, heat olive oil. Add in sliced onions and peppers. Sautè over medium heat until onions begin to caramelize and peppers soften, about 8-10 minutes. Take off heat and set aside.
Add pico de gallo ingredients to a medium mixing bowl and stir until well combined. Set aside until ready to eat.
Add chipotle crema ingredients to a small mixing bowl and whisk until well combined.
Assemble bowls: Place cauliflower rice or rice on the bottom, top with grilled chicken, sauteèd onions and peppers, black beans if adding, pico de gallo, scallions, and a drizzle of chipotle crema.
Storing: A fully assembled chipotle chicken burrito bowl can be stored in an airtight container in the fridge for up to 3 days. To reheat, simply warm on the stove on low or in the microwave until heated through.If you're storing the burrito bowl components separately, the instructions will vary. See above in the post for details!