Preheat the oven to 400 degrees F. Place chicken on cutting board, breast-side down. Use a pair of poultry shears or heavy-duty kitchen scissors to cut along either side of the bird's backbone; remove. Turn the chicken over; use palms to press on breast bones to flatten the chicken. Using a sharp, heavy knife, cut the chicken between breast halves. The chicken will be in 2, flat pieces.
Place an ovenproof cooling rack on a large rimmed baking sheet. In a small bowl, mix together the lemon juice, garlic, 1/4 cup olive oil, 1/2 teaspoon salt, pepper, and pimento paste, then rub over the chicken. Transfer the chicken to a rack, then pour 2 tablespoons olive oil and 1/2 cup wine over the chicken. Roast 30 minutes; turn the chicken over and pour the remaining 2 tablespoons oil and 1/2 cup wine over the chicken. Roast the chicken until golden, moist, and opaque throughout, about 30 minutes.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.