Preheat oven to 425°F (220°C).
In a large bowl, toss chicken, olive oil, and taco seasoning until coated.
Add all your sliced peppers, tomatoes, and onions to the bowl. Toss again to combine.
Spread everything evenly on a sheet pan lined with parchment or foil for easy cleanup.
Roast for 20–25 minutes, or until the chicken is fully cooked (internal temp should reach 165°F/74°C).
Top with fresh cilantro and a scoop of guacamole just before serving.
Serve over cauliflower rice, quinoa, or rice (optional).
Approximately 280–285 calories per serving, including 1 tbsp guacamole but without rice or cauliflower rice.