In a large skillet, heat the olive oil over medium-high heat.
While the oil is heating, season the chicken breasts with garlic powder, onion powder, cumin, smoked paprika, salt, and pepper.
Once the oil is hot, add the seasoned chicken breasts to the skillet. Cook for about 6-7 minutes on each side until they are golden brown and cooked through. Ensure the internal temperature reaches 165°F (75°C).
Remove the chicken from the skillet and let it rest on a plate, covering it with foil to keep warm.
In the same skillet, add the sliced bell pepper and cherry tomatoes. Sauté for 4-5 minutes until the vegetables are tender.
Add the lime juice, lime zest, and chopped cilantro to the skillet. Stir to combine, allowing the flavors to meld for an additional minute.
Return the chicken to the skillet, coating it with the cilantro-lime mixture. Cook for another 2 minutes to heat through.
Serve the chicken topped with the sautéed vegetables and garnish with avocado slices.