Heat oven to 400°F Spray 13x9-inch glass baking dish with cooking spray. Grind all rub ingredients in mortar with pestle or in electric coffee grinder until as fine as possible. (Don’t worry if larger pieces remain.).
Dry chicken with paper towels. Brush with 1 tablespoon of the oil; sprinkle tops with half of the rub. Heat remaining 1 tablespoon oil in large nonstick skillet over medium to medium-high heat until hot. Cook chicken, rub-side up, 2 minutes or until browned; turn. Sprinkle with remaining rub; cook 2 minutes or until browned.
Pour 1 1/3 cups of the pico de gallo into baking dish. Sprinkle with lemon peel; top with chicken. Cover with foil. Bake 10 minutes; drizzle with lemon juice. Bake, covered, an additional 5 minutes or until chicken is no longer pink in center. Serve with remaining 2/3 cup pico de gallo.
TIP *One tablespoon chopped canned chipotle chiles can be used instead to make a wet rub.