Season the chicken with salt and pepper. Then, lightly sprinkle the chicken with flour. It doesn't need to be completed covered (1 tablespoon of flour should be enough), just sprinkles of flour over the two sides of the chicken.
In a saute pan on medium high heat, add about 2-3 tablespoons of oil then sear the chicken until golden on both sides. When done, add in the chopped garlic. When the garlic has started to brown, add in the butter. Once the butter is melted, add in the 2 tablespoons of flour.
Cook the flour for about 1 minutes until it starts brown a little. Now, pour in the chicken broth. Whisk the broth in the pan while scraping the bottom to get any stuck on bits. Once the broth has thicken and is simmering, lower the heat to low.
Add in the mustard, honey, thyme and a little salt. You'll add more salt later if needed.
Next, place the chicken back in. Allow the chicken to simmer in the sauce on low until fully cooked (about 15-20 minutes depending on size).
When the chicken is done, remove the chicken. Now, whisk in the heavy cream and then taste for salt, add more salt if needed. Once the sauce is thick again turn the stove off, place the chicken back into the pan and allow to cool a bit for about 10 minutes before serving.