1. Preheat oven to 350°. Bake pecans in a single layer in a shallow pan 6 to 7 minutes or until toasted and fragrant, stirring halfway through.
2. Toss together chicken and next 5 ingredients in a large bowl. Add vinaigrette; toss to coat. Sprinkle with pecans, and serve immediately.
*1 (8-oz.) can pineapple tidbits, drained, may be substituted.