1Preheat your oven to 450°F (232°C).
Cook the chicken breast in a skillet over medium heat until fully cooked, about 6-7 minutes per side. Let it cool slightly, then slice it thinly.
Roll out the pizza crust on a baking sheet or pizza stone.
Spread the tomato sauce evenly over the pizza crust.
Sprinkle half of the mozzarella cheese over the sauce.
Arrange the sliced chicken, bell pepper, and onion evenly over the cheese.
Sprinkle the remaining mozzarella cheese on top.
Season with oregano and red pepper flakes.
Bake in the preheated oven for 12-15 minutes, or until the crust is golden brown and the cheese is bubbly.
Remove from the oven, let it cool for a few minutes, slice, and serve.