Position a rack in the lower third of the oven and preheat to 425 degrees F.
Heat the olive oil in a small skillet over medium heat. Add the garlic and cook, stirring frequently, until lightly golden, about 2 minutes. Remove from the heat and stir in the brown sugar, lemon juice, garlic lovers and red pepper flakes.
Arrange the chicken breasts in the middle of a baking pan. Season the chicken with salt and drizzle with the garlic mixture. Return to the oven and bake until the chicken is cooked through (about 20-25 min).
Remove from the oven..Add the cilantro to the baking dish. Serve the chicken with the brown rice and avocado slices. Drizzle with the pan juices.