Greek Chicken Spaghetti Squash Skillet

INGREDIENTS

spaghetti squash

1 lb

boneless, skinless chicken breast, cut into ½-inch pieces

1/2 tsp

salt, divided

1/2 tsp

ground pepper, divided

2 tsp

olive oil

1/2

yellow onion, chopped

garlic cloves, minced

1 tsp

dried oregano

1/8 tsp

red chili flakes

1 28 ounce can

crushed tomatoes

1/4 cup

minced flat-leaf parsley

pitted Kalamata olives, quartered

3 tbsp

crumbled feta cheese