Step 1

Preheat oven to 400 degrees F. In medium bowl, toss shrimp with 1 tablespoon oil, chili powder and paprika until shrimp are evenly coated in oil and spices. Spread shrimp on rimmed baking pan in single layer; transfer to oven and bake 5 minutes or until shrimp are cooked through.

Step 2

Meanwhile, in large bowl, whisk vinegar, mustard, honey, shallot, grapefruit zest, salt and pepper and remaining 2 tablespoons oil until smooth. Add fennel and toss until well combined. Let stand at room temperature 10 minutes.

Step 3

Add grapefruit to fennel mixture and gently toss until combined.

Step 4

Add grapefruit to fennel mixture and gently toss until combined.