Easy Sweet And Sour Chicken

3 tablespoons all-purpose flour 1/2 teaspoon garlic powder 1/2 teaspoon salt 1/2 teaspoon ground black pepper 1 pound skinless, boneless chicken breast halves, cut into 1-inch cubes 3 tablespoons vegetable oil, divided 3 celery ribs, sliced 2 green bell peppers, diced 1 onion, chopped 1/2 cup ketchup

1/2 cup lemon juice 1/2 cup crushed pineapple with syrup 1/3 cup packed brown sugar

Directions Combine flour, garlic powder, salt, and black pepper in a shallow dish. Roll and coat chicken cubes in flour mixture. Heat 2 tablespoons vegetable oil in a skillet over medium-high heat. Cook and stir chicken in hot oil until not longer pink in the center and juices run clear, 8 to 10 minutes; remove and set aside.

Heat 1 tablespoon vegetable oil in the same skillet over medium heat. Cook and stir celery, green peppers, and onion in heated oil until slightly tender, about 5 minutes. Return chicken to the skillet. Whisk ketchup, lemon juice, pineapple, and brown sugar in a bowl; pour