Brush both sides of each chicken breast with olive oil.
Sprinkle the chicken with kosher salt and black pepper.
Let the chicken rest while the grill heats.
Heat a grill or grill pan to medium-high heat.
Place the chicken on the hot grill. Cook the chicken for 5 to 6 minutes without moving it.
Flip the chicken. Cook the chicken for another 5 to 6 minutes, or until an instant-read thermometer reads 165 degrees F in the thickest part.
Transfer the chicken to a plate and tent the chicken loosely with foil.
In a small saucepan, heat extra virgin olive oil over medium heat.
Add the minced garlic and cook for 30 seconds, stirring often, until fragrant. Do not let the garlic brown.
Pour the crushed tomatoes into the saucepan. Add kosher salt, red pepper flakes, and sugar if needed.
Stir the sauce with a wooden spoon or spatula.
Bring the sauce to a gentle simmer, reduce heat, simmer for 6 to 8 minutes, or until slightly thickened.
Remove the saucepan from the heat.
Stir in the chopped fresh tarragon and lemon juice.
Taste the sauce and add more salt if needed.
(Optional) For a smoother sauce, pulse it once or twice with an immersion blender.
Spoon the warm tomato tarragon sauce over the grilled chicken. Garnish with whole tarragon leaves.
Notes
8 WW Smart Points
Storing and Reheating
Store in the Refrigerator - Place leftover chicken and sauce in an airtight container. Refrigerate for up to 3 days.Store Separately - If possible, store the chicken and sauce in separate containers. This helps the chicken keep a better texture.Reheat in the Microwave - Place one serving on a microwave-safe plate. Cover loosely and heat in short intervals until warmed through.Reheat on Stovetop - Place the sauce in a small saucepan over low heat. Warm the chicken in the sauce until heated through.Reheat in the Oven - Place the chicken and sauce in a baking dish. Cover with foil and warm at 325 degrees F until heated through.