Add shallots and fresh rosemary; saut 1 minute. Stir in pomegranate juice, agave nectar, and red wine vinegar; bring to a boil. Cook until reduced to 1/2 cup (about 15 minutes), stirring occasionally.
Remove from heat; stir in butter.
Heat a large skillet over medium-high heat.
Add 1 tablespoon olive oil; swirl.
Sprinkle chicken with 1/4 teaspoon salt and 1/4 teaspoon black pepper.
Add chicken to pan; saut 4 minutes on each side or until browned.
Brush chicken with 1/4 cup glaze; cook 1 minute. Turn chicken over; brush with remaining glaze. Cook 1 minute or until chicken is done.