Heat 1 tablespoon olive oil in 12-inch nonstick skillet over medium-high heat and cook chicken, stirring occasionally, 5 minutes or until chicken is thoroughly cooked. Remove chicken and keep warm.
Add remaining 1 tablespoon olive oil to same skillet and cook onion, red pepper and oregano over medium heat, stirring occasionally, 4 minutes or until vegetables are tender. Add garlic and cook 1 minute. Add spinach; toss to coat. Cover and cook about 2 minutes, until spinach is partially wilted, stirring occasionally.
Stir in water and Knorr® Sides Plus™ Veggies - Roasted Chicken Rice with Harvest Vegetables. Bring to a boil. Reduce heat to low and cook covered 10 minutes or until rice is tender. Stir in chicken and lemon juice. Sprinkle with cheese.