Start by preheating your oven to 400°F. Then, season your chicken breasts generously with oregano, salt, and pepper.
Next, heat up the olive oil in a large oven-safe skillet over high heat. Once the pan is nice and hot (you’ll see the oil shimmering), add in your cubed chicken. Let them cook without touching them for about 4-5 minutes, then carefully flip them over and cook for another 4 minutes until they’re golden brown. Remove the skillet from the heat.
Now, it’s time to assemble your dish! Spread the pizza sauce over the chicken, followed by a layer of shredded mozzarella cheese and the pepperoni slices. If you like, sprinkle on some more oregano for extra flavor.
Pop the skillet into the oven and let it bake for around 10 minutes, or until the cheese is all melty and the chicken is cooked through.
Once it’s done, take it out, serve it up, and enjoy your deliciously simple meal!