Preheat the oven to 400°F.
Rub tri tip roast generously with coffee rub. Drizzle with olive oil.
Once grill is preheated, grill tri tip roast for 6-8 minutes per side depending on desired doneness.
While meat is grilling, drizzle onions, peppers, and scallions with olive oil and grill for 2 minutes per side. (Grill scallions on top rack).
Slice tri tip into thin strips and serve on a platter with grilled onions, peppers, scallions and flour tortillas.
Assemble fajitas by creating a tortilla “pocket” and filling it with fajita ingredients.
Finish with a squeeze of lime.
