Place the chicken breasts in a large bowl, shallow dish, or resealable bag.
In a blender, combine the lime juice, honey, cilantro, garlic, salt, black pepper, crushed red pepper flakes, and olive oil until smooth.
Pour half of the marinade over the chicken, ensuring it is evenly coated. Cover and refrigerate for at least 30 minutes or up to 2 hours. Reserve the remaining dressing in the refrigerator.
Cook the jasmine rice according to package instructions if it hasn't already been prepared.
Preheat the grill to high heat (about 500–550°F) for at least 10 minutes.
Remove the chicken from the marinade, allowing any excess to drip off.
Grill the chicken for 5 to 6 minutes per side, or until the internal temperature reaches 165°F (74°C).
If using fresh corn on the cob, grill it alongside the chicken for about 10 minutes, turning occasionally. Slice the kernels from the cob once cooled slightly.
Allow the chicken to rest for 5 to 10 minutes before slicing.
Assemble the Grilled Chicken Summer Rice Bowls by dividing the jasmine rice among serving bowls. Top with sliced grilled chicken, sweet corn, tomatoes, avocado, and pickled onions.
Drizzle with the reserved cilantro lime dressing, season with kosher salt and black pepper if desired, and serve immediately.