Preheat the oven to 375°F (190°C). Arrange four boneless, skinless chicken breasts in a baking dish.
Rub each chicken breast with olive oil, then sprinkle evenly with salt, pepper, and dried thyme. Spread minced garlic on top of each piece for added aroma.
Evenly dollop and spread the Boursin cheese over each chicken breast, covering the surface completely.
Place the dish in the preheated oven and bake uncovered for about 25 minutes, or until the chicken is cooked through and the cheese is bubbly and starting to golden around the edges.
Remove from oven and let rest for 5 minutes. Serve hot, with the cheese sauce gently pooling around the chicken for a creamy presentation.