Add the chicken to a nonstick skillet over medium heat. Cook 6-8 minutes, or until cooked through, then stir in the taco seasoning.
Remove the chicken and set it aside.
Add the olive oil to the same skillet. Add the red bell pepper and sauté 3-4 minutes until slightly softened.
Add the cauliflower rice to the skillet with a pinch of salt and pepper. Cook for 4-5 minutes, stirring occasionally, until heated through.
Squeeze in the lime juice and stir in half of the cilantro.
Divide the cauliflower rice between four bowls. Top with the cooked chicken, bell peppers, shredded cheese, salsa, and Greek yogurt.
Garnish with the remaining cilantro and any optional toppings.