Italian-Style Chicken Meatballs

Name: Italian-Style Chicken Meatballs
Prep time: 15 min
Cook time: 18 min
Total time: 33 min
Ingredients: 1 large egg; 1 pound ground chicken ((I like 93% lean)); ½ cup whole wheat panko breadcrumbs; ⅓ cup Parmesan cheese (finely grated ); 2 tablespoons extra-virgin olive oil (divided); 1 teaspoon dried oregano; ½ teaspoon garlic powder; ½ teaspoon onion powder; ½ teaspoon kosher salt; ¼ teaspoon red pepper flakes; 2 tablespoons tomato paste (divided); 3 tablespoons flat-leaf parsley (finely chopped ); 2 ½ cups fresh spinach (lightly packed ); Tomato sauce; Cooked whole wheat pasta, zucchini, or other vegetable noodles; Buns (for sandwiches); Toothpicks (to serve as an appetizer)