1. Coat a large nonstick skillet with cooking spray. Heat over medium-high heat. Sprinkle chicken with salt. Cook chicken, flipping halfway through, until it reaches a minimum internal temperature of 165 degrees F (8-10 minutes). Remove chicken from skillet and set aside.
2. Add peppers, juice, onion, sage, garlic, and pepper to skillet. Bring to a boil. Reduce heat and simmer, covered, until vegetables are tender (2-3 minutes).
3. In a small bowl, combine water and cornstarch. Stir in apples. Cook and stir until thickened and bubbly (2-3 minutes). Return chicken to skillet and heat through to serve.