Greek Chicken Burgers with Lemon Pepper Yogurt Sauce

Ingredients

• 1/4 cup (60 ml) mayonnaise
• 1/4 cup (60 ml) plain low-fat Greek yogurt
• 2 1/2 tsps (12 ml) lemon and pepper grinder (club house) divided
• 1 pound (500 g) ground chicken
• 1/4 cup (60 ml) crumbled feta cheese
• 2 tbsps (30 ml) finely chopped red onion
• 1 tsp (5 ml) garlic powder (club house)
• 1 tsp (5 ml) oregano leaves (club house)
• 4 whole wheat rolls toasted
• 4 leaves green leaf lettuce
• 1 medium tomato sliced
• 8 thin slices cucumber