In a shallow dish, combine flour, salt, black pepper, and garlic powder.
Dredge each chicken breast in the flour mixture until evenly coated, shaking off excess flour.
In a skillet over medium heat, add olive oil and sear the chicken breasts for 2-3 minutes on each side until lightly browned. This step is optional but adds extra flavor.
Place the seared chicken breasts into the crockpot.
In a mixing bowl, combine chicken broth, lemon juice, lemon zest, minced garlic, oregano, and capers. Mix well.
Pour the lemon mixture over the chicken in the crockpot.
Cover and cook on low for 4-6 hours or on high for 2-3 hours, until the chicken is tender and cooked through.
Before serving, sprinkle the chopped fresh parsley over the chicken for a burst of color and flavor.
Notes
Serve the chicken piccata over a bed of cooked pasta or rice, drizzling the sauce from the crockpot over the top. Garnish with additional lemon slices and fresh parsley for a vibrant look.