Open Reynolds® Slow Cooker Liner and place it inside a 5- to 6 1/2-quart slow cooker bowl. Fit liner snugly against the bottom and sides of bowl; pull top of liner over rim of bowl.

Place chicken in Reynolds® Slow Cooker Liner. Place onions and bell peppers on top of chicken.

Mix salsa, fajita seasoning mix and cayenne pepper in a medium bowl. Pour over chicken. Place lid on slow cooker.

Cook on LOW for 6 to 7 hours OR on HIGH for 3 to 4 hours until chicken is done.

Carefully remove lid to allow steam to escape. Gently stir chicken and sauce with a plastic or wooden slotted spoon. Spoon 1/2 cup of chicken mixture into center of each tortilla; add desired toppings and fold tortilla over filling. Do not lift or transport liner with food inside. Cool slow cooker completely; remove Reynolds® Slow Cooker Liner and toss.