Greek Chicken Potato Salad

Name: Greek Chicken Potato Salad
Ingredients: 2 tbsp. fresh lemon juice; 1/2 tsp. Dijon mustard; 1/4 c. extra-virgin olive oil; 1/2 small red onion, very thinly sliced; Kosher salt; Freshly ground black pepper; 3 c. Tyson® Grilled & Ready® Chicken Breast Strips; 2 lb. mixed baby potatoes, halved; 2 Persian cucumbers, thinly sliced into half moons; 1 1/2 c. halved cherry tomatoes; 3/4 c. pitted Kalamata olives, halved; 1/4 c. chopped fresh dill sprigs, plus more for serving; 1 c. firm feta cheese, crumbled, plus more for serving