Using the saute mode, heat the electric pressure cooker until “hot.”
Mix the dry seasonings together. Sprinkle the seasonings on the chicken.
Add the olive oil to the electric pressure cooker. Brown the chicken on all sides.
Add the onion to the chicken. Cook until the onion is softened, about 3 to 5 minutes.
To the electric pressure cooker, add the chicken broth. Scrape the bottom to remove any cooked on pieces. Cancel the saute mode.
Pour the rice over the chicken. Do not stir.
Place the lid on the electric pressure cooker and set the valve to sealing. Set the pressure cooker to “manual” or “pressure cook” for 10 minutes. Quick release the pressure when the cook cycle is complete.
Stir in the broccoli and 2 cups of cheese. Replace the lid and allow the electric pressure cooker to “keep warm” until the broccoli has softened to your desired tenderness. Ideally, this will take 10 to 15 minutes.
Top with remaining cheddar cheese and place the lid over the pressure cooker just until the cheese melts.