Season the chicken breasts generously with olive oil, salt, pepper, and any preferred spices. Preheat your grill to medium-high heat and grill each breast for about 6-7 minutes per side until cooked through.
Prepare broccoli florets by tossing them with olive oil, lemon juice, and a pinch of salt. Spread on a baking sheet and roast at 400°F for 15-20 minutes until crisp-tender.
Prepare your chosen grains according to package instructions while grilling the chicken and roasting the broccoli. Fluff them gently with a fork to keep warm.
In a medium saucepan over medium heat, melt butter until bubbly; add minced garlic and sauté until fragrant. Stir in heavy cream, season with salt and pepper, and simmer until thickened.
Layer cooked grains in serving dishes, top with sliced grilled chicken and roasted broccoli, and drizzle with creamy garlic sauce. Garnish with chopped parsley or chives if desired.