Preheat oven to 400 degrees. In a small bowl mix olive oil, rosemary, garlic powder, parsley, and salt & pepper.
Place chicken on greased baking sheet and brush with olive oil mixture. Top chicken breasts with sliced lemons, placing extras on baking sheet around chicken.
In a large bowl, toss diced potatoes in olive oil to lightly coat. Season with desired spices (I used garlic powder). Place potatoes on baking sheet surrounding the chicken. Bake for 25-30 minutes.
Meanwhile, trim broccoli and slice squash. Toss in olive oil & desired spices. After 25-30 minutes is up, stir potatoes & place broccoli mixture on baking tray surrounding the chicken. Bake for additional 10-15 minutes. If crispy texture is desired, turn on broiler for last 3-5 minutes.
Serve with a side of corn on the cob & fresh, crusty bread!