Combine Sweet Baby Ray’s BBQ Sauce and Italian dressing in a mixing bowl.
Place the chicken breasts in a large sealable bag or dish and pour the marinade over the chicken.
Let the chicken marinate in the refrigerator for 4 hours to overnight.
Preheat the grill to medium-high heat and lightly oil the grate.
Grill the chicken for about 15 minutes, turning occasionally, until the chicken is fully cooked and has an internal temperature of 165°F (75°C).