In a small bowl, whisk together the honey, soy sauce, minced garlic, olive oil, and red pepper flakes (if using) until combined.
Place the chicken breasts in a single layer in the bottom of the Crock Pot. Pour the honey-garlic sauce evenly over the top.
Season the chicken lightly with salt and pepper—remember the soy sauce is salty, so go easy on salt.
Cooking
Cover and cook on low for 4–6 hours or on high for 2–3 hours. The chicken is done when it reaches 165°F (74°C) and shreds easily with two forks.
Remove two forks and shred the chicken directly in the sauce. Stir well so the shredded meat soaks up the sauce, making it glossy and flavorful.
Serving
Taste and adjust: add more soy or a splash of lemon if it needs brightness. Garnish with chopped green onions and serve hot.
Notes
For a thicker glaze, mix 1 teaspoon cornstarch with 1 tablespoon cold water and stir into the sauce during the last 15–30 minutes of cooking. Refrigerate leftovers for up to 3–4 days.