1-Make marinade and marinate beef: Mix olive oil, coconut aminos, Cajun seasoning, cayenne, salt, lemon pepper, thyme, and rosemary; add beef cubes and marinate overnight (or at least 2 hours). Keep vegetables separate.

2-Cut and thread skewers: Cut steak and vegetables into 1-inch pieces, then thread alternately onto skewers, leaving space at ends.

3-Preheat grill: Preheat grill to medium heat (375°F).

4-Grill kabobs: Place skewers on grill and cook for about 10 minutes, turning every 3 minutes, until internal temperature reaches 145°F. In the last minute, brush with olive oil and sprinkle crushed red pepper if desired.

5-Preheat oven: Preheat oven to 375°F and line a baking sheet with parchment paper or foil.

6-Arrange skewers for baking: Place assembled skewers on the prepared baking sheet, leaving space between them.

7-Bake kabobs: Bake for 30 minutes, flipping every 10 minutes and brushing with olive oil each time. Add crushed red pepper at the end if desired.