Place 2 chicken breasts between plastic wrap or parchment paper and gently pound to an even 3/4-inch thickness using a meat mallet or rolling pin. This ensures even cooking and prevents dry spots.
Sprinkle both sides of the chicken with 1 teaspoon onion powder, 1 teaspoon paprika, 1 teaspoon garlic powder, 1 teaspoon salt, and 1/2 teaspoon black pepper.
Heat 2 tablespoons light olive oil in a large, sturdy pot or enameled cast iron Dutch oven over medium-high heat. Add the seasoned chicken pieces and cook for 3-4 minutes until golden brown on the bottom. Flip the chicken and cook for an additional 3-4 minutes.
Pour 2 cups chicken broth over the chicken, cover with a tight-fitting lid, and cook at a gentle boil for 15 minutes. Remove the chicken and place on a cutting board. Let cool for 2-3 minutes, then shred the chicken using two forks. The meat should pull apart easily.