Preheat oven to 375 degrees
Cut chicken breast into 1 in. chunks
Heat cast iron over medium. Add olive oil
Add chicken to cast iron and season with pepper, salt, and Tony Chachere's. Cook for 4-5 minutes, flipping occasionally to cook mostly through
Add in frozen peas, mushrooms, and minced garlic. Cook until garlic is fragrant and peas are mostly thawed
Add your can of Cream of Mushroom and cream cheese. Stir until combined/melted. Add you hot sauce to taste
Add milk to thin mixture out a bit
Sprinkle some of your mozerella on top, about 1/2
Top the mixture with your crescent roll dough. Try to cover as much of the mixture as possible
Beat your egg and brush the top of the dough with it
Put the whole cast iron in the oven and bake for 11 minutes
Pull out and sprinkle the top with salt and the rest of your cheese
Bake for an additional 3 minutes to melt the cheese
Pull out and let sit for a few minutes before serving