Crispy Air Fryer Falafel

Name: Crispy Air Fryer Falafel
Ingredients: 8 ounces dried chickpeas (1 1/3 cups); 1/4 teaspoon baking soda; 1 cup fresh parsley leaves and tender stems; 1 cup fresh cilantro leaves and tender stems; 1 small shallot; 2 cloves garlic; 3 tablespoons olive oil; 2 teaspoons kosher salt; 1 1/2 teaspoons ground cumin; 1/2 teaspoon baking powder; 1/8 teaspoon cayenne pepper (optional); 1 to 4 tablespoons all-purpose or chickpea flour (if needed); Cooking spray