Stir together panko (Japanese breadcrumbs), grated Parmesan cheese, chopped fresh thyme, chopped fresh sage, minced garlic, lemon zest, kosher salt, black pepper, and crushed red pepper. Halve acorn squash lengthwise; discard seeds. Cut halves into thirds; place on a baking sheet. Brush with olive oil; sprinkle with panko mixture. Bake at 425°F until golden brown, about 35 minutes.