Preheat oven to 375°F. Heat oil in a large skillet over medium heat. Add red bell pepper and red onion, season generously with salt, and cook about 4-6 minutes, stirring occasionally, until vegetables soften but still have a little crunch. Add chicken, frozen corn, black beans, chili powder, garlic powder, and cumin. Stir to combine and cook until everything is warmed through, about 2-3 minutes.
Roll out pizza dough pretty thin into a large rectangle-like shape and lay flat on a baking sheet lined with parchment paper. Scoop filling in a line down the middle of the pizza dough (leaving a little blank gap at either end) and top with pickled jalapenos and shredded cheese. Feel free to use more cheese if desired. Just like if you were making a burrito, bring the sides of the pizza dough togehter in the middle, overlapping to create a seal. Pince either end and season top of dough with Kosher salt.
Cook in oven until crust is cooked through and golden brown, aboug 20-25 minutes. Remove from oven, let cool slightly, cut into slices and serve with sliced avocado, salsa, and sour cream.
Grab a rotisserie chicken at your grocery store to make things extra easy. Feel free to use any cheese that you think will taste great with these southwest flavors.