INGREDIENTS
1/2 cup
purchased tzatziki, divided
1/4 cup
dry breadcrumbs
1/4 cup
grated onion
5 tbsp
chopped fresh mint, divided
1 tsp
ground cumin
5/8 tsp
kosher salt, divided
3/8 tsp
black pepper, divided
1/8 tsp
ground red pepper
1 lb
ground chicken
4 tsp
olive oil, divided
4
zucchini, halved lengthwise
Cooking spray