1. Preheat oven to 425° F.
2. Heat oil in a sauté pan over medium-high heat; add chicken and seasoning. Cook until browned, 3–4 min.
3. Meanwhile, roughly chop broccoli.
4. Add broccoli, broth, carrots, rice, and butter to pan; bring to a boil. Cover and reduce heat to medium-low. Simmer 20 min, until liquid is taken up and rice is almost cooked.
5. Stir in ½ cup cheese and milk. Sprinkle remaining ½ cup cheese over top.
6. Transfer pan to oven. Bake 15 min, until cheese is melted and starting to brown.