Greek Chicken Kebab Bowl

Name: Greek Chicken Kebab Bowl
Ingredients: 1 lb chicken breast; 4 tablespoons olive oil, divided; Juice of a lemon ((about 3tbs)); 2 garlic cloves; 2 large purple onions, divided; 1 tablespoon fresh oregano; 1 teaspoon smoked paprika; Kosher salt and ground black pepper; 1 large red pepper, seeded, cubed; 1 large green bell pepper, seeded, cubed; 1 cup plain Greek yogurt; 1½ tablespoons fresh lemon juice; 3 tablespoons fresh mint leaves, chopped; ¼ cup fresh cilantro leaf with sprigs, packed ((or parsley))