In a large bowl or re-sealable plastic bag, combine chicken with green taco sauce. Stir or shake to coat. Marinate at least 30 minutes or up to 2 hours. Heat oven to 350 degrees F. Bake chicken 15-20 minutes, or until internal temperature reaches 165 degrees F. Let chicken cool 10 minutes, then cut into small cubes. 

In a medium bowl, combine refried beans and salsa. Transfer prepared pizza crust to baking sheet. Spread bean mixture over dough, leaving 1/4 inches at the edges for crust. Top with peppers, green chilies, chicken, and cheese. Bake 10-15 minutes, or until crust is golden brown and cheese is melted. Top with taco sauce and crispy onion toppers and serve.