In a large skillet over medium-high heat, heat the olive oil. Add the diced onion and bell pepper, and cook until softened, about 5 minutes.
Add the garlic and cook for an additional minute.
Add the diced tomatoes, oregano, cumin, paprika, salt, and pepper, and stir to combine.
Add the chicken breasts to the skillet and reduce the heat to medium. Cover and cook until the chicken is cooked through, about 20 minutes, stirring occasionally.
Using two forks, shred the chicken in the skillet. Stir to combine with the sauce.
Serve over cooked rice or quinoa.
Interesting Facts
Ropa Vieja is a traditional Cuban dish that translates to "old clothes".
The origin of the name is believed to come from the fact that the shredded chicken and vegetables resemble a pile of old clothes.
This dish is often served over cooked white rice, but can also be served over quinoa or cauliflower rice.