Flatten each chicken breast half to 1/2 inch thick. Sprinkle evenly with salt and pepper.
Cook bacon in large nonstick skillet over med heat til crisp. Remove bacon from pan. Add chicken to drippings; cook 6 min on each side or til cooked through. Remove chicken from pan and keep warm.
Add onion to pan; cook 2 min or til tender. Add cider and broth; bring to a boil, scraping pan to loosen browned bits. Cook til reduced to 1/2 c (about 5 min). Stir in cooked bacon and serve sauce over chicken.