Cook rice according to package directions in a small saucepan, omitting salt and fat; drain.

While rice cooks, melt 1 teaspoon butter in a large heavy skillet over medium-high heat. Sprinkle chicken with 1/4 teaspoon salt and pepper. Add chicken to pan; cook 3 minutes on each side or until done. Remove from pan. Add cider and mustard to pan, scraping pan to loosen browned bits; cook 2 to 3 minutes or until syrupy. Add chicken to pan, turning to coat. Remove from heat; set aside.

Melt remaining 5 teaspoons butter in saucepan over medium-high heat; cook for 2 minutes or until browned and fragrant. Lower heat to medium; add pecans, and cook for 1 minute or until toasted, stirring frequently. Add rice and the remaining 1/2 teaspoon salt; toss well to coat. Serve rice with chicken. Sprinkle with parsley.