Preheat your oven to 350 degrees f.
In a large oven-proof skillet heat your oil.
Add in chicken and sprinkle with all the seasonings. Cook until slightly golden brown, then stir in diced onion and bell peppers.
Cook stirring frequently for 4-5 minutes, until bell peppers are slightly softened.
Reduce the heat to low and stir in tomato sauce and cook stirring until sauce starts to bubble.
Remove from the heat and add in cooked brown rice, or quinoa. Stir in with a wooden spoon until brown rice/quinoa is well coated with your sauce.
Sprinkle with shredded cheese, then top with pepperoni, and sliced and olives.
Transfer skillet into your preheated oven and bake, uncovered for 15 minutes until cheese on top is golden and sauce is bubbly.
Remove from the oven and let sit at room temperature for about 5 minutes.
Garnish with fresh basil leaves and serve.
Enjoy!